We're dividing 580066 by 57 
The aim is to understand the frequency of 57 in 580066.

Step 1:
5 divided by 57 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 57

Step 2:
57 can be fit into 58 1 times, resulting in a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 1 after subtracting 57 from 58.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 57

Going ahead to step 3:
57 can be fit into 10 0 times, resulting in a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
The remainder is 10 after subtracting 0 from 10.
Grab the next digit (0) from the dividend, add it to 10, then carry on: 100 / 57

On to step 4:
The number 57 fits into 100 1 times, leaving a remainder of 43.
The number 1 becomes the next digit in our result. 
Result so far: 101.0
Deduct 57 from 100 and we're left with 43.
Grab the next digit (6) from the dividend, add it to 43, then carry on: 436 / 57

Going ahead to step 5:
When dividing 436 by 57, we get 7 with a remainder of 37.
Use 7 as the next digit of our solution. 
Result so far: 1017.0
The remainder is 37 after subtracting 399 from 436.
Append the next digit (6) from the dividend to 37 and continue with: 376 / 57

Let's proceed to step 6:
57 can be fit into 376 6 times, resulting in a remainder of 34.
The number 6 becomes the next digit in our result. 
Result so far: 10176.0
The remainder is 34 after subtracting 342 from 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 7:
The number 57 fits into 340 5 times, leaving a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 10176.5
Subtract 285 from 340 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 8:
When dividing 550 by 57, we get 9 with a remainder of 37.
Record the quotient 9 as the next digit in the result. 
Result so far: 10176.59
If we subtract 513 from 550, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 9:
If we divide 370 by 57, we get 6 and a remainder of 28.
Record the quotient 6 as the next digit in the result. 
Result so far: 10176.596
If we subtract 342 from 370, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 10:
280 divided by 57 is 4 with a remainder of 52.
Use 4 as the next digit of our solution. 
Result so far: 10176.5964
Subtracting 228 from 280 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 11:
When dividing 520 by 57, we get 9 with a remainder of 7.
Write down 9 as next digit of the result. 
Result so far: 10176.59649
Subtracting 513 from 520 leaves us 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.

On to step 12:
The number 57 fits into 70 1 times, leaving a remainder of 13.
The next digit of our result is 1. 
Result so far: 10176.596491
Deduct 57 from 70 and we're left 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.

On to step 13:
57 can be fit into 130 2 times, resulting in a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 10176.5964912
Subtract 114 from 130 to 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.

Step 14:
160 divided by 57 is 2 with a remainder of 46.
The number 2 becomes the next digit in our result. 
Result so far: 10176.59649122
Subtract 114 from 160 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

After the division, we end up with 10176.59649122 and a remainder of 4.6e-08.