Let's divide 87151929 by 641
We want to divide 87151929 by 641.

Let's proceed to step 1:
If we divide 8 by 641, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 641

Step 2:
641 can be fit into 87 0 times, resulting in a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 87 and we're left with 87.
Append the next digit (1) from the dividend to 87 and continue with: 871 / 641

Going ahead to step 3:
The number 641 fits into 871 1 times, leaving a remainder of 230.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 641 from 871 to get 230.
Include the next digit (5) from the dividend after 230, then repeat: 2305 / 641

Step 4:
2305 divided by 641 is 3 with a remainder of 382.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we take 1923 away from 2305, we end up with 382.
Take the next digit (1) from the dividend and append it to 382, then repeat: 3821 / 641

Step 5:
When dividing 3821 by 641, we get 5 with a remainder of 616.
Write down 5 as next digit of the result. 
Result so far: 135.0
Subtracting 3205 from 3821 leaves us with 616.
Take the next digit (9) from the dividend and append it to 616, then repeat: 6169 / 641

Advancing to step 6:
If we divide 6169 by 641, we get 9 and a remainder of 400.
Put 9 as the next digit of the answer. 
Result so far: 1359.0
The remainder is 400 after subtracting 5769 from 6169.
Include the next digit (2) from the dividend after 400, then repeat: 4002 / 641

Going ahead to step 7:
4002 divided by 641 is 6 with a remainder of 156.
Record the quotient 6 as the next digit in the result. 
Result so far: 13596.0
If we subtract 3846 from 4002, we get 156.
Fetch the next digit (9) from the dividend, attach it to 156 and continue: 1569 / 641

On to step 8:
641 goes into 1569 2 times with a remainder of 287.
Write down 2 as next digit of the result. 
Result so far: 135962.0
If we subtract 1282 from 1569, we get 287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2870, and continue the process.

Going ahead to step 9:
If we divide 2870 by 641, we get 4 and a remainder of 306.
Record the quotient 4 as the next digit in the result. 
Result so far: 135962.4
Deduct 2564 from 2870 and we're left with 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Advancing to step 10:
641 goes into 3060 4 times with a remainder of 496.
The next digit of our result is 4. 
Result so far: 135962.44
If we subtract 2564 from 3060, we get 496.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4960, and continue the process.

Our division results in 135962.44 with a remaining 0.496.