76428088 ÷ 639 
Let's see how many times 639 fits into 76428088.

Advancing to step 1:
7 divided by 639 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (6) from the dividend to 7 and continue with: 76 / 639

Moving on to step 2:
76 divided by 639 is 0 with a remainder of 76.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 76, we end up with 76.
Bring next digit (4) of the dividend behind the 76 and repeat the process: 764 / 639

Let's proceed to step 3:
If we divide 764 by 639, we get 1 and a remainder of 125.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 639 away from 764, we end up with 125.
Fetch the next digit (2) from the dividend, attach it to 125 and continue: 1252 / 639

Moving on to step 4:
When dividing 1252 by 639, we get 1 with a remainder of 613.
The next digit of our result is 1. 
Result so far: 11.0
If we take 639 away from 1252, we end up with 613.
Take the next digit (8) from the dividend and append it to 613, then repeat: 6138 / 639

Advancing to step 5:
639 goes into 6138 9 times with a remainder of 387.
The number 9 becomes the next digit in our result. 
Result so far: 119.0
If we take 5751 away from 6138, we end up with 387.
Append the next digit (0) from the dividend to 387 and continue with: 3870 / 639

On to step 6:
3870 divided by 639 is 6 with a remainder of 36.
The number 6 becomes the next digit in our result. 
Result so far: 1196.0
Subtracting 3834 from 3870 leaves us with 36.
Append the next digit (8) from the dividend to 36 and continue with: 368 / 639

Going ahead to step 7:
When dividing 368 by 639, we get 0 with a remainder of 368.
Record the quotient 0 as the next digit in the result. 
Result so far: 11960.0
Subtracting 0 from 368 leaves us with 368.
Take the next digit (8) from the dividend and append it to 368, then repeat: 3688 / 639

On to step 8:
If we divide 3688 by 639, we get 5 and a remainder of 493.
Write down 5 as next digit of the result. 
Result so far: 119605.0
Deduct 3195 from 3688 and we're left with 493.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4930, and continue the process.

Moving on to step 9:
639 can be fit into 4930 7 times, resulting in a remainder of 457.
The next digit of our result is 7. 
Result so far: 119605.7
Subtracting 4473 from 4930 leaves us with 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

Let's proceed to step 10:
The number 639 fits into 4570 7 times, leaving a remainder of 97.
Put 7 as the next digit of the answer. 
Result so far: 119605.77
The remainder is 97 after subtracting 4473 from 4570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Our division results in 119605.77 with a remaining 0.097.