575280 divided by 57 
The aim is to understand the frequency of 57 in 575280.

Advancing to step 1:
5 divided by 57 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 57

On to step 2:
57 divided by 57 is 1 with a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 57 from 57 leaves us with 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 57

Step 3:
When dividing 5 by 57, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 57

Step 4:
57 can be fit into 52 0 times, resulting in a remainder of 52.
Record the quotient 0 as the next digit in the result. 
Result so far: 100.0
Deduct 0 from 52 and we're left with 52.
Append the next digit (8) from the dividend to 52 and continue with: 528 / 57

Step 5:
528 divided by 57 is 9 with a remainder of 15.
The next digit of our result is 9. 
Result so far: 1009.0
If we subtract 513 from 528, we get 15.
Append the next digit (0) from the dividend to 15 and continue with: 150 / 57

Moving on to step 6:
The number 57 fits into 150 2 times, leaving a remainder of 36.
Use 2 as the next digit of our solution. 
Result so far: 10092.0
Subtracting 114 from 150 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 7:
360 divided by 57 is 6 with a remainder of 18.
Record the quotient 6 as the next digit in the result. 
Result so far: 10092.6
Deduct 342 from 360 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 8:
57 can be fit into 180 3 times, resulting in a remainder of 9.
Record the quotient 3 as the next digit in the result. 
Result so far: 10092.63
If we subtract 171 from 180, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 9:
If we divide 90 by 57, we get 1 and a remainder of 33.
Record the quotient 1 as the next digit in the result. 
Result so far: 10092.631
If we take 57 away from 90, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 10:
The number 57 fits into 330 5 times, leaving a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 10092.6315
If we subtract 285 from 330, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 11:
When dividing 450 by 57, we get 7 with a remainder of 51.
The next digit of our result is 7. 
Result so far: 10092.63157
The remainder is 51 after subtracting 399 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Moving on to step 12:
When dividing 510 by 57, we get 8 with a remainder of 54.
The next digit of our result is 8. 
Result so far: 10092.631578
Deduct 456 from 510 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 13:
When dividing 540 by 57, we get 9 with a remainder of 27.
The next digit of our result is 9. 
Result so far: 10092.6315789
Deduct 513 from 540 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 14:
If we divide 270 by 57, we get 4 and a remainder of 42.
Record the quotient 4 as the next digit in the result. 
Result so far: 10092.63157894
Deduct 228 from 270 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Our division results in 10092.63157894 with a remaining 4.2e-08.