Let's divide 57171109 by 521
The aim is to understand the frequency of 521 in 57171109.

Let's proceed to step 1:
If we divide 5 by 521, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 521

Advancing to step 2:
If we divide 57 by 521, we get 0 and a remainder of 57.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 57, we get 57.
Fetch the next digit (1) from the dividend, attach it to 57 and continue: 571 / 521

Step 3:
521 can be fit into 571 1 times, resulting in a remainder of 50.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 521 from 571 and we're left with 50.
Take the next digit (7) from the dividend and append it to 50, then repeat: 507 / 521

Let's proceed to step 4:
521 goes into 507 0 times with a remainder of 507.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 507, we end up with 507.
Include the next digit (1) from the dividend after 507, then repeat: 5071 / 521

Advancing to step 5:
When dividing 5071 by 521, we get 9 with a remainder of 382.
The next digit of our result is 9. 
Result so far: 109.0
Deduct 4689 from 5071 and we're left with 382.
Grab the next digit (1) from the dividend, add it to 382, then carry on: 3821 / 521

Going ahead to step 6:
521 can be fit into 3821 7 times, resulting in a remainder of 174.
Put 7 as the next digit of the answer. 
Result so far: 1097.0
If we subtract 3647 from 3821, we get 174.
Fetch the next digit (0) from the dividend, attach it to 174 and continue: 1740 / 521

On to step 7:
521 can be fit into 1740 3 times, resulting in a remainder of 177.
Use 3 as the next digit of our solution. 
Result so far: 10973.0
If we take 1563 away from 1740, we end up with 177.
Bring next digit (9) of the dividend behind the 177 and repeat the process: 1779 / 521

Advancing to step 8:
The number 521 fits into 1779 3 times, leaving a remainder of 216.
The number 3 becomes the next digit in our result. 
Result so far: 109733.0
If we take 1563 away from 1779, we end up with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Let's proceed to step 9:
521 goes into 2160 4 times with a remainder of 76.
The number 4 becomes the next digit in our result. 
Result so far: 109733.4
Subtract 2084 from 2160 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 10:
521 can be fit into 760 1 times, resulting in a remainder of 239.
Write down 1 as next digit of the result. 
Result so far: 109733.41
Subtract 521 from 760 to get 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

Advancing to step 11:
When dividing 2390 by 521, we get 4 with a remainder of 306.
Record the quotient 4 as the next digit in the result. 
Result so far: 109733.414
The remainder is 306 after subtracting 2084 from 2390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

On to step 12:
When dividing 3060 by 521, we get 5 with a remainder of 455.
The number 5 becomes the next digit in our result. 
Result so far: 109733.4145
Deduct 2605 from 3060 and we're left with 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Moving on to step 13:
If we divide 4550 by 521, we get 8 and a remainder of 382.
Use 8 as the next digit of our solution. 
Result so far: 109733.41458
If we take 4168 away from 4550, we end up with 382.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

Step 14:
The number 521 fits into 3820 7 times, leaving a remainder of 173.
Use 7 as the next digit of our solution. 
Result so far: 109733.414587
Deduct 3647 from 3820 and we're left with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Going ahead to step 15:
If we divide 1730 by 521, we get 3 and a remainder of 167.
The number 3 becomes the next digit in our result. 
Result so far: 109733.4145873
If we take 1563 away from 1730, we end up with 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Advancing to step 16:
521 goes into 1670 3 times with a remainder of 107.
The number 3 becomes the next digit in our result. 
Result so far: 109733.41458733
If we take 1563 away from 1670, we end up with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

The quotient of the division is 109733.41458733, and the remainder is 1.07e-07.