We look at the division of 901508 by 57 
The aim is to understand the frequency of 57 in 901508.

Going ahead to step 1:
If we divide 9 by 57, we get 0 and a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 57

Moving on to step 2:
90 divided by 57 is 1 with a remainder of 33.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 57 from 90 to get 33.
Fetch the next digit (1) from the dividend, attach it to 33 and continue: 331 / 57

Let's proceed to step 3:
The number 57 fits into 331 5 times, leaving a remainder of 46.
Write down 5 as next digit of the result. 
Result so far: 15.0
The remainder is 46 after subtracting 285 from 331.
Bring next digit (5) of the dividend behind the 46 and repeat the process: 465 / 57

Step 4:
The number 57 fits into 465 8 times, leaving a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 158.0
Subtracting 456 from 465 leaves us with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 57

Going ahead to step 5:
When dividing 90 by 57, we get 1 with a remainder of 33.
Record the quotient 1 as the next digit in the result. 
Result so far: 1581.0
If we take 57 away from 90, we end up with 33.
Fetch the next digit (8) from the dividend, attach it to 33 and continue: 338 / 57

Advancing to step 6:
338 divided by 57 is 5 with a remainder of 53.
Record the quotient 5 as the next digit in the result. 
Result so far: 15815.0
If we take 285 away from 338, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 7:
When dividing 530 by 57, we get 9 with a remainder of 17.
Write down 9 as next digit of the result. 
Result so far: 15815.9
Deduct 513 from 530 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 8:
57 can be fit into 170 2 times, resulting in a remainder of 56.
The next digit of our result is 2. 
Result so far: 15815.92
Deduct 114 from 170 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 9:
If we divide 560 by 57, we get 9 and a remainder of 47.
The next digit of our result is 9. 
Result so far: 15815.929
The remainder is 47 after subtracting 513 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Going ahead to step 10:
If we divide 470 by 57, we get 8 and a remainder of 14.
Write down 8 as next digit of the result. 
Result so far: 15815.9298
If we take 456 away from 470, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 11:
57 goes into 140 2 times with a remainder of 26.
Use 2 as the next digit of our solution. 
Result so far: 15815.92982
Subtract 114 from 140 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 12:
57 can be fit into 260 4 times, resulting in a remainder of 32.
Record the quotient 4 as the next digit in the result. 
Result so far: 15815.929824
If we take 228 away from 260, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 13:
When dividing 320 by 57, we get 5 with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 15815.9298245
Subtracting 285 from 320 leaves us 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.

Step 14:
The number 57 fits into 350 6 times, leaving a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 15815.92982456
Subtract 342 from 350 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 15815.92982456 with a remaining 8e-09.