We're dividing 660551 by 57 
The aim is to understand the frequency of 57 in 660551.

Going ahead to step 1:
When dividing 6 by 57, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 57

Advancing to step 2:
57 can be fit into 66 1 times, resulting in a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 57 from 66, we get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 57

Advancing to step 3:
90 divided by 57 is 1 with a remainder of 33.
The next digit of our result is 1. 
Result so far: 11.0
Subtract 57 from 90 to get 33.
Include the next digit (5) from the dividend after 33, then repeat: 335 / 57

Moving on to step 4:
57 goes into 335 5 times with a remainder of 50.
The next digit of our result is 5. 
Result so far: 115.0
The remainder is 50 after subtracting 285 from 335.
Append the next digit (5) from the dividend to 50 and continue with: 505 / 57

Going ahead to step 5:
57 can be fit into 505 8 times, resulting in a remainder of 49.
The number 8 becomes the next digit in our result. 
Result so far: 1158.0
Subtract 456 from 505 to get 49.
Include the next digit (1) from the dividend after 49, then repeat: 491 / 57

Let's proceed to step 6:
491 divided by 57 is 8 with a remainder of 35.
Record the quotient 8 as the next digit in the result. 
Result so far: 11588.0
Deduct 456 from 491 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 7:
57 can be fit into 350 6 times, resulting in a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 11588.6
Deduct 342 from 350 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 8:
80 divided by 57 is 1 with a remainder of 23.
Put 1 as the next digit of the answer. 
Result so far: 11588.61
Deduct 57 from 80 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 9:
230 divided by 57 is 4 with a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 11588.614
Subtracting 228 from 230 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 10:
20 divided by 57 is 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 11588.614
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 11:
When dividing 200 by 57, we get 3 with a remainder of 29.
The next digit of our result is 3. 
Result so far: 11588.61403
Subtracting 171 from 200 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 12:
290 divided by 57 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 11588.614035
Subtract 285 from 290 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 13:
50 divided by 57 is 0 with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 11588.614035
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 14:
500 divided by 57 is 8 with a remainder of 44.
Write down 8 as next digit of the result. 
Result so far: 11588.61403508
Subtract 456 from 500 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

In conclusion, the division gives 11588.61403508 with a balance of 4.4e-08.