We look at the division of 15949 by 57 
The aim is to understand the frequency of 57 in 15949.

Step 1:
The number 57 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 57

Step 2:
When dividing 15 by 57, we get 0 with a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Fetch the next digit (9) from the dividend, attach it to 15 and continue: 159 / 57

Moving on to step 3:
If we divide 159 by 57, we get 2 and a remainder of 45.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 114 from 159 and we're left with 45.
Take the next digit (4) from the dividend and append it to 45, then repeat: 454 / 57

Going ahead to step 4:
The number 57 fits into 454 7 times, leaving a remainder of 55.
The next digit of our result is 7. 
Result so far: 27.0
If we take 399 away from 454, we end up with 55.
Include the next digit (9) from the dividend after 55, then repeat: 559 / 57

Going ahead to step 5:
559 divided by 57 is 9 with a remainder of 46.
The next digit of our result is 9. 
Result so far: 279.0
The remainder is 46 after subtracting 513 from 559.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 6:
460 divided by 57 is 8 with a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 279.8
If we take 456 away from 460, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 7:
40 divided by 57 is 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 279.8
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 8:
57 goes into 400 7 times with a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 279.807
If we take 399 away from 400, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 9:
If we divide 10 by 57, we get 0 and a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 279.807
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 10:
57 goes into 100 1 times with a remainder of 43.
Put 1 as the next digit of the answer. 
Result so far: 279.80701
Subtracting 57 from 100 leaves us with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 11:
If we divide 430 by 57, we get 7 and a remainder of 31.
Record the quotient 7 as the next digit in the result. 
Result so far: 279.807017
If we take 399 away from 430, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 12:
If we divide 310 by 57, we get 5 and a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 279.8070175
Subtracting 285 from 310 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 13:
If we divide 250 by 57, we get 4 and a remainder of 22.
Record the quotient 4 as the next digit in the result. 
Result so far: 279.80701754
If we take 228 away from 250, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The final result is 279.80701754 with a remainder of 2.2e-08.