We look at the division of 75274757 by 639 
We want to figure out the number of times 75274757 can be divided by 639.

Advancing to step 1:
If we divide 7 by 639, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 639

Let's proceed to step 2:
The number 639 fits into 75 0 times, leaving a remainder of 75.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 75, we get 75.
Include the next digit (2) from the dividend after 75, then repeat: 752 / 639

Advancing to step 3:
If we divide 752 by 639, we get 1 and a remainder of 113.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 639 from 752 leaves us with 113.
Append the next digit (7) from the dividend to 113 and continue with: 1137 / 639

On to step 4:
639 can be fit into 1137 1 times, resulting in a remainder of 498.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtract 639 from 1137 to get 498.
Append the next digit (4) from the dividend to 498 and continue with: 4984 / 639

Let's proceed to step 5:
When dividing 4984 by 639, we get 7 with a remainder of 511.
Put 7 as the next digit of the answer. 
Result so far: 117.0
The remainder is 511 after subtracting 4473 from 4984.
Grab the next digit (7) from the dividend, add it to 511, then carry on: 5117 / 639

Moving on to step 6:
If we divide 5117 by 639, we get 8 and a remainder of 5.
Use 8 as the next digit of our solution. 
Result so far: 1178.0
Subtract 5112 from 5117 to get 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 639

Advancing to step 7:
639 can be fit into 55 0 times, resulting in a remainder of 55.
Use 0 as the next digit of our solution. 
Result so far: 11780.0
Subtract 0 from 55 to get 55.
Bring next digit (7) of the dividend behind the 55 and repeat the process: 557 / 639

On to step 8:
557 divided by 639 is 0 with a remainder of 557.
Write down 0 as next digit of the result. 
Result so far: 117800.0
If we subtract 0 from 557, we get 557.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5570, and continue the process.

Let's proceed to step 9:
639 goes into 5570 8 times with a remainder of 458.
Write down 8 as next digit of the result. 
Result so far: 117800.8
The remainder is 458 after subtracting 5112 from 5570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

Let's proceed to step 10:
639 goes into 4580 7 times with a remainder of 107.
Write down 7 as next digit of the result. 
Result so far: 117800.87
Subtract 4473 from 4580 to get 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

On to step 11:
The number 639 fits into 1070 1 times, leaving a remainder of 431.
The next digit of our result is 1. 
Result so far: 117800.871
Deduct 639 from 1070 and we're left with 431.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4310, and continue the process.

Advancing to step 12:
When dividing 4310 by 639, we get 6 with a remainder of 476.
The number 6 becomes the next digit in our result. 
Result so far: 117800.8716
Deduct 3834 from 4310 and we're left with 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Moving on to step 13:
When dividing 4760 by 639, we get 7 with a remainder of 287.
The number 7 becomes the next digit in our result. 
Result so far: 117800.87167
If we subtract 4473 from 4760, 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.

Let's proceed to step 14:
The number 639 fits into 2870 4 times, leaving a remainder of 314.
Put 4 as the next digit of the answer. 
Result so far: 117800.871674
Subtract 2556 from 2870 to get 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Let's proceed to step 15:
639 goes into 3140 4 times with a remainder of 584.
Write down 4 as next digit of the result. 
Result so far: 117800.8716744
If we take 2556 away from 3140, we end up with 584.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

The final outcome is 117800.8716744, with a leftover of 5.84e-06.