537131 ÷ 57 
The aim is to understand the frequency of 57 in 537131.

Moving on to step 1:
When dividing 5 by 57, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 57

Step 2:
If we divide 53 by 57, we get 0 and a remainder of 53.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 53 and we're left with 53.
Include the next digit (7) from the dividend after 53, then repeat: 537 / 57

Advancing to step 3:
57 goes into 537 9 times with a remainder of 24.
The next digit of our result is 9. 
Result so far: 9.0
The remainder is 24 after subtracting 513 from 537.
Fetch the next digit (1) from the dividend, attach it to 24 and continue: 241 / 57

Step 4:
When dividing 241 by 57, we get 4 with a remainder of 13.
The number 4 becomes the next digit in our result. 
Result so far: 94.0
If we subtract 228 from 241, we get 13.
Append the next digit (3) from the dividend to 13 and continue with: 133 / 57

Advancing to step 5:
57 can be fit into 133 2 times, resulting in a remainder of 19.
The number 2 becomes the next digit in our result. 
Result so far: 942.0
Deduct 114 from 133 and we're left with 19.
Bring next digit (1) of the dividend behind the 19 and repeat the process: 191 / 57

On to step 6:
57 can be fit into 191 3 times, resulting in a remainder of 20.
Use 3 as the next digit of our solution. 
Result so far: 9423.0
The remainder is 20 after subtracting 171 from 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 7:
When dividing 200 by 57, we get 3 with a remainder of 29.
Write down 3 as next digit of the result. 
Result so far: 9423.3
The remainder is 29 after subtracting 171 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 8:
When dividing 290 by 57, we get 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 9423.35
Subtracting 285 from 290 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 9:
57 can be fit into 50 0 times, resulting in a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 9423.35
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 10:
57 goes into 500 8 times with a remainder of 44.
Write down 8 as next digit of the result. 
Result so far: 9423.3508
Subtracting 456 from 500 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 11:
57 can be fit into 440 7 times, resulting in a remainder of 41.
The number 7 becomes the next digit in our result. 
Result so far: 9423.35087
If we subtract 399 from 440, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Let's proceed to step 12:
If we divide 410 by 57, we get 7 and a remainder of 11.
Put 7 as the next digit of the answer. 
Result so far: 9423.350877
The remainder is 11 after subtracting 399 from 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The final outcome is 9423.350877, with a leftover of 1.1e-06.