We look at the division of 945593 by 57 
The aim is to understand the frequency of 57 in 945593.

Moving on to step 1:
When dividing 9 by 57, we get 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Grab the next digit (4) from the dividend, add it to 9, then carry on: 94 / 57

On to step 2:
57 goes into 94 1 times with a remainder of 37.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 57 from 94 to get 37.
Bring next digit (5) of the dividend behind the 37 and repeat the process: 375 / 57

Let's proceed to step 3:
If we divide 375 by 57, we get 6 and a remainder of 33.
Put 6 as the next digit of the answer. 
Result so far: 16.0
The remainder is 33 after subtracting 342 from 375.
Take the next digit (5) from the dividend and append it to 33, then repeat: 335 / 57

Moving on to step 4:
When dividing 335 by 57, we get 5 with a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 165.0
Deduct 285 from 335 and we're left with 50.
Bring next digit (9) of the dividend behind the 50 and repeat the process: 509 / 57

On to step 5:
When dividing 509 by 57, we get 8 with a remainder of 53.
Write down 8 as next digit of the result. 
Result so far: 1658.0
Subtracting 456 from 509 leaves us with 53.
Grab the next digit (3) from the dividend, add it to 53, then carry on: 533 / 57

On to step 6:
57 can be fit into 533 9 times, resulting in a remainder of 20.
Use 9 as the next digit of our solution. 
Result so far: 16589.0
The remainder is 20 after subtracting 513 from 533.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 7:
57 goes into 200 3 times with a remainder of 29.
Use 3 as the next digit of our solution. 
Result so far: 16589.3
Subtract 171 from 200 to get 29.
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.
Record the quotient 5 as the next digit in the result. 
Result so far: 16589.35
If we take 285 away from 290, we end up 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.

Step 9:
When dividing 50 by 57, we get 0 with a remainder of 50.
The next digit of our result is 0. 
Result so far: 16589.35
Deduct 0 from 50 and we're left 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.

On to step 10:
The number 57 fits into 500 8 times, leaving a remainder of 44.
The number 8 becomes the next digit in our result. 
Result so far: 16589.3508
The remainder is 44 after subtracting 456 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 11:
The number 57 fits into 440 7 times, leaving a remainder of 41.
The number 7 becomes the next digit in our result. 
Result so far: 16589.35087
The remainder is 41 after subtracting 399 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

On to step 12:
When dividing 410 by 57, we get 7 with a remainder of 11.
The number 7 becomes the next digit in our result. 
Result so far: 16589.350877
Subtracting 399 from 410 leaves us with 11.
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 16589.350877, with a leftover of 1.1e-06.