We look at the division of 524851 by 57 
The aim is to understand the frequency of 57 in 524851.

Going ahead to step 1:
The number 57 fits into 5 0 times, leaving a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (2) from the dividend and append it to 5, then repeat: 52 / 57

Moving on to step 2:
57 can be fit into 52 0 times, resulting in a remainder of 52.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 52 to get 52.
Take the next digit (4) from the dividend and append it to 52, then repeat: 524 / 57

Let's proceed to step 3:
524 divided by 57 is 9 with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtracting 513 from 524 leaves us with 11.
Append the next digit (8) from the dividend to 11 and continue with: 118 / 57

Advancing to step 4:
57 can be fit into 118 2 times, resulting in a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 92.0
Subtracting 114 from 118 leaves us with 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 57

On to step 5:
57 can be fit into 45 0 times, resulting in a remainder of 45.
Put 0 as the next digit of the answer. 
Result so far: 920.0
Subtract 0 from 45 to get 45.
Bring next digit (1) of the dividend behind the 45 and repeat the process: 451 / 57

Moving on to step 6:
57 can be fit into 451 7 times, resulting in a remainder of 52.
Write down 7 as next digit of the result. 
Result so far: 9207.0
The remainder is 52 after subtracting 399 from 451.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 7:
57 can be fit into 520 9 times, resulting in a remainder of 7.
The next digit of our result is 9. 
Result so far: 9207.9
Deduct 513 from 520 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 8:
70 divided by 57 is 1 with a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 9207.91
Subtracting 57 from 70 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 9:
57 goes into 130 2 times with a remainder of 16.
Record the quotient 2 as the next digit in the result. 
Result so far: 9207.912
If we subtract 114 from 130, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 10:
160 divided by 57 is 2 with a remainder of 46.
The number 2 becomes the next digit in our result. 
Result so far: 9207.9122
Deduct 114 from 160 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

The quotient of the division is 9207.9122, and the remainder is 0.00046.