87308030 ÷ 531 
We want to figure out the number of times 87308030 can be divided by 531.

On to step 1:
The number 531 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 531

Let's proceed to step 2:
531 can be fit into 87 0 times, resulting in a remainder of 87.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 87, we get 87.
Bring next digit (3) of the dividend behind the 87 and repeat the process: 873 / 531

Step 3:
531 can be fit into 873 1 times, resulting in a remainder of 342.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 342 after subtracting 531 from 873.
Fetch the next digit (0) from the dividend, attach it to 342 and continue: 3420 / 531

Let's proceed to step 4:
When dividing 3420 by 531, we get 6 with a remainder of 234.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Deduct 3186 from 3420 and we're left with 234.
Grab the next digit (8) from the dividend, add it to 234, then carry on: 2348 / 531

On to step 5:
If we divide 2348 by 531, we get 4 and a remainder of 224.
Put 4 as the next digit of the answer. 
Result so far: 164.0
If we subtract 2124 from 2348, we get 224.
Append the next digit (0) from the dividend to 224 and continue with: 2240 / 531

Moving on to step 6:
531 goes into 2240 4 times with a remainder of 116.
Write down 4 as next digit of the result. 
Result so far: 1644.0
Subtracting 2124 from 2240 leaves us with 116.
Append the next digit (3) from the dividend to 116 and continue with: 1163 / 531

Going ahead to step 7:
The number 531 fits into 1163 2 times, leaving a remainder of 101.
The number 2 becomes the next digit in our result. 
Result so far: 16442.0
Deduct 1062 from 1163 and we're left with 101.
Include the next digit (0) from the dividend after 101, then repeat: 1010 / 531

Moving on to step 8:
531 can be fit into 1010 1 times, resulting in a remainder of 479.
Put 1 as the next digit of the answer. 
Result so far: 164421.0
Subtracting 531 from 1010 leaves us with 479.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4790, and continue the process.

Advancing to step 9:
531 goes into 4790 9 times with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 164421.9
If we take 4779 away from 4790, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 10:
The number 531 fits into 110 0 times, leaving a remainder of 110.
Write down 0 as next digit of the result. 
Result so far: 164421.9
Subtracting 0 from 110 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Step 11:
531 can be fit into 1100 2 times, resulting in a remainder of 38.
The number 2 becomes the next digit in our result. 
Result so far: 164421.902
The remainder is 38 after subtracting 1062 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 12:
When dividing 380 by 531, we get 0 with a remainder of 380.
The number 0 becomes the next digit in our result. 
Result so far: 164421.902
If we subtract 0 from 380, we get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Advancing to step 13:
When dividing 3800 by 531, we get 7 with a remainder of 83.
The number 7 becomes the next digit in our result. 
Result so far: 164421.90207
Deduct 3717 from 3800 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Let's proceed to step 14:
531 can be fit into 830 1 times, resulting in a remainder of 299.
The number 1 becomes the next digit in our result. 
Result so far: 164421.902071
If we subtract 531 from 830, we get 299.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Going ahead to step 15:
The number 531 fits into 2990 5 times, leaving a remainder of 335.
Use 5 as the next digit of our solution. 
Result so far: 164421.9020715
Subtracting 2655 from 2990 leaves us with 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Going ahead to step 16:
3350 divided by 531 is 6 with a remainder of 164.
Record the quotient 6 as the next digit in the result. 
Result so far: 164421.90207156
If we take 3186 away from 3350, we end up with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

After the division, we end up with 164421.90207156 and a remainder of 1.64e-07.