We look at the division of 87631077 by 642 
We're looking to find how many times 642 goes into 87631077.

On to step 1:
642 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 642

Step 2:
The number 642 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
Deduct 0 from 87 and we're left with 87.
Fetch the next digit (6) from the dividend, attach it to 87 and continue: 876 / 642

Moving on to step 3:
642 goes into 876 1 times with a remainder of 234.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 642 from 876 and we're left with 234.
Bring next digit (3) of the dividend behind the 234 and repeat the process: 2343 / 642

Moving on to step 4:
If we divide 2343 by 642, we get 3 and a remainder of 417.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtracting 1926 from 2343 leaves us with 417.
Include the next digit (1) from the dividend after 417, then repeat: 4171 / 642

Let's proceed to step 5:
642 can be fit into 4171 6 times, resulting in a remainder of 319.
Write down 6 as next digit of the result. 
Result so far: 136.0
If we take 3852 away from 4171, we end up with 319.
Include the next digit (0) from the dividend after 319, then repeat: 3190 / 642

Step 6:
The number 642 fits into 3190 4 times, leaving a remainder of 622.
The number 4 becomes the next digit in our result. 
Result so far: 1364.0
Subtract 2568 from 3190 to get 622.
Take the next digit (7) from the dividend and append it to 622, then repeat: 6227 / 642

Moving on to step 7:
The number 642 fits into 6227 9 times, leaving a remainder of 449.
Use 9 as the next digit of our solution. 
Result so far: 13649.0
The remainder is 449 after subtracting 5778 from 6227.
Include the next digit (7) from the dividend after 449, then repeat: 4497 / 642

Advancing to step 8:
642 goes into 4497 7 times with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 136497.0
Subtracting 4494 from 4497 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 9:
642 can be fit into 30 0 times, resulting in a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 136497.0
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 10:
The number 642 fits into 300 0 times, leaving a remainder of 300.
Record the quotient 0 as the next digit in the result. 
Result so far: 136497.0
The remainder is 300 after subtracting 0 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Our division results in 136497.0 with a remaining 0.3.