We're dividing 87639521 by 986 
Our goal is to divide 87639521 by 986.

Step 1:
When dividing 8 by 986, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 986

Moving on to step 2:
The number 986 fits into 87 0 times, leaving a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 87, we end up with 87.
Bring next digit (6) of the dividend behind the 87 and repeat the process: 876 / 986

On to step 3:
986 can be fit into 876 0 times, resulting in a remainder of 876.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 876 to get 876.
Grab the next digit (3) from the dividend, add it to 876, then carry on: 8763 / 986

Moving on to step 4:
8763 divided by 986 is 8 with a remainder of 875.
Put 8 as the next digit of the answer. 
Result so far: 8.0
The remainder is 875 after subtracting 7888 from 8763.
Fetch the next digit (9) from the dividend, attach it to 875 and continue: 8759 / 986

Going ahead to step 5:
986 can be fit into 8759 8 times, resulting in a remainder of 871.
Record the quotient 8 as the next digit in the result. 
Result so far: 88.0
Subtracting 7888 from 8759 leaves us with 871.
Take the next digit (5) from the dividend and append it to 871, then repeat: 8715 / 986

Going ahead to step 6:
When dividing 8715 by 986, we get 8 with a remainder of 827.
Put 8 as the next digit of the answer. 
Result so far: 888.0
The remainder is 827 after subtracting 7888 from 8715.
Append the next digit (2) from the dividend to 827 and continue with: 8272 / 986

Moving on to step 7:
If we divide 8272 by 986, we get 8 and a remainder of 384.
Write down 8 as next digit of the result. 
Result so far: 8888.0
If we take 7888 away from 8272, we end up with 384.
Take the next digit (1) from the dividend and append it to 384, then repeat: 3841 / 986

Advancing to step 8:
When dividing 3841 by 986, we get 3 with a remainder of 883.
Write down 3 as next digit of the result. 
Result so far: 88883.0
Deduct 2958 from 3841 and we're left with 883.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8830, and continue the process.

Step 9:
986 goes into 8830 8 times with a remainder of 942.
The next digit of our result is 8. 
Result so far: 88883.8
If we take 7888 away from 8830, we end up with 942.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9420, and continue the process.

Going ahead to step 10:
When dividing 9420 by 986, we get 9 with a remainder of 546.
Record the quotient 9 as the next digit in the result. 
Result so far: 88883.89
Subtracting 8874 from 9420 leaves us with 546.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

On to step 11:
5460 divided by 986 is 5 with a remainder of 530.
Write down 5 as next digit of the result. 
Result so far: 88883.895
Deduct 4930 from 5460 and we're left with 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

On to step 12:
If we divide 5300 by 986, we get 5 and a remainder of 370.
Record the quotient 5 as the next digit in the result. 
Result so far: 88883.8955
Subtract 4930 from 5300 to get 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

The quotient of the division is 88883.8955, and the remainder is 0.0037.