We look at the division of 877861 by 87 
Let's see how many times 87 fits into 877861.

Advancing to step 1:
If we divide 8 by 87, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 87

Moving on to step 2:
87 can be fit into 87 1 times, resulting in a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 87 from 87 to get 0.
Grab the next digit (7) from the dividend, add it to 0, then carry on: 7 / 87

Let's proceed to step 3:
If we divide 7 by 87, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtract 0 from 7 to get 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 87

Advancing to step 4:
87 goes into 78 0 times with a remainder of 78.
The next digit of our result is 0. 
Result so far: 100.0
If we subtract 0 from 78, we get 78.
Fetch the next digit (6) from the dividend, attach it to 78 and continue: 786 / 87

Step 5:
When dividing 786 by 87, we get 9 with a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 1009.0
If we subtract 783 from 786, we get 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 87

On to step 6:
31 divided by 87 is 0 with a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 10090.0
Deduct 0 from 31 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 7:
The number 87 fits into 310 3 times, leaving a remainder of 49.
Use 3 as the next digit of our solution. 
Result so far: 10090.3
If we subtract 261 from 310, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 8:
When dividing 490 by 87, we get 5 with a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 10090.35
Subtract 435 from 490 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 9:
The number 87 fits into 550 6 times, leaving a remainder of 28.
Put 6 as the next digit of the answer. 
Result so far: 10090.356
Subtract 522 from 550 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 10:
The number 87 fits into 280 3 times, leaving a remainder of 19.
The next digit of our result is 3. 
Result so far: 10090.3563
If we subtract 261 from 280, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 11:
If we divide 190 by 87, we get 2 and a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 10090.35632
If we take 174 away from 190, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 12:
The number 87 fits into 160 1 times, leaving a remainder of 73.
Use 1 as the next digit of our solution. 
Result so far: 10090.356321
If we take 87 away from 160, we end up with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Moving on to step 13:
When dividing 730 by 87, we get 8 with a remainder of 34.
Write down 8 as next digit of the result. 
Result so far: 10090.3563218
If we subtract 696 from 730, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 14:
340 divided by 87 is 3 with a remainder of 79.
Put 3 as the next digit of the answer. 
Result so far: 10090.35632183
The remainder is 79 after subtracting 261 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

The quotient of the division is 10090.35632183, and the remainder is 7.9e-08.