We look at the division of 99757528 by 521 
We want to figure out the number of times 99757528 can be divided by 521.

On to step 1:
If we divide 9 by 521, we get 0 and a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 521

Moving on to step 2:
When dividing 99 by 521, we get 0 with a remainder of 99.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 99 after subtracting 0 from 99.
Append the next digit (7) from the dividend to 99 and continue with: 997 / 521

Step 3:
If we divide 997 by 521, we get 1 and a remainder of 476.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 521 from 997 and we're left with 476.
Append the next digit (5) from the dividend to 476 and continue with: 4765 / 521

On to step 4:
521 can be fit into 4765 9 times, resulting in a remainder of 76.
Write down 9 as next digit of the result. 
Result so far: 19.0
Deduct 4689 from 4765 and we're left with 76.
Grab the next digit (7) from the dividend, add it to 76, then carry on: 767 / 521

Advancing to step 5:
The number 521 fits into 767 1 times, leaving a remainder of 246.
Write down 1 as next digit of the result. 
Result so far: 191.0
The remainder is 246 after subtracting 521 from 767.
Fetch the next digit (5) from the dividend, attach it to 246 and continue: 2465 / 521

Going ahead to step 6:
521 goes into 2465 4 times with a remainder of 381.
Use 4 as the next digit of our solution. 
Result so far: 1914.0
Subtract 2084 from 2465 to get 381.
Bring next digit (2) of the dividend behind the 381 and repeat the process: 3812 / 521

Moving on to step 7:
When dividing 3812 by 521, we get 7 with a remainder of 165.
The number 7 becomes the next digit in our result. 
Result so far: 19147.0
If we subtract 3647 from 3812, we get 165.
Include the next digit (8) from the dividend after 165, then repeat: 1658 / 521

Advancing to step 8:
When dividing 1658 by 521, we get 3 with a remainder of 95.
Write down 3 as next digit of the result. 
Result so far: 191473.0
If we subtract 1563 from 1658, we get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Moving on to step 9:
The number 521 fits into 950 1 times, leaving a remainder of 429.
Record the quotient 1 as the next digit in the result. 
Result so far: 191473.1
Subtracting 521 from 950 leaves us with 429.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4290, and continue the process.

On to step 10:
When dividing 4290 by 521, we get 8 with a remainder of 122.
Record the quotient 8 as the next digit in the result. 
Result so far: 191473.18
Subtracting 4168 from 4290 leaves us with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Moving on to step 11:
When dividing 1220 by 521, we get 2 with a remainder of 178.
Write down 2 as next digit of the result. 
Result so far: 191473.182
If we subtract 1042 from 1220, we get 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Advancing to step 12:
521 goes into 1780 3 times with a remainder of 217.
Record the quotient 3 as the next digit in the result. 
Result so far: 191473.1823
If we subtract 1563 from 1780, we get 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Going ahead to step 13:
2170 divided by 521 is 4 with a remainder of 86.
Record the quotient 4 as the next digit in the result. 
Result so far: 191473.18234
Subtract 2084 from 2170 to get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Step 14:
521 goes into 860 1 times with a remainder of 339.
The next digit of our result is 1. 
Result so far: 191473.182341
The remainder is 339 after subtracting 521 from 860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3390, and continue the process.

Let's proceed to step 15:
521 goes into 3390 6 times with a remainder of 264.
Use 6 as the next digit of our solution. 
Result so far: 191473.1823416
Subtracting 3126 from 3390 leaves us with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Advancing to step 16:
When dividing 2640 by 521, we get 5 with a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 191473.18234165
If we subtract 2605 from 2640, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

After the division, we end up with 191473.18234165 and a remainder of 3.5e-08.