We're dividing 921904 by 57 
The aim is to understand the frequency of 57 in 921904.

Step 1:
9 divided by 57 is 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Bring next digit (2) of the dividend behind the 9 and repeat the process: 92 / 57

On to step 2:
57 goes into 92 1 times with a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 57 from 92 to get 35.
Append the next digit (1) from the dividend to 35 and continue with: 351 / 57

On to step 3:
57 goes into 351 6 times with a remainder of 9.
Write down 6 as next digit of the result. 
Result so far: 16.0
Subtract 342 from 351 to get 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 57

Going ahead to step 4:
57 goes into 99 1 times with a remainder of 42.
Write down 1 as next digit of the result. 
Result so far: 161.0
Deduct 57 from 99 and we're left with 42.
Append the next digit (0) from the dividend to 42 and continue with: 420 / 57

Step 5:
420 divided by 57 is 7 with a remainder of 21.
Put 7 as the next digit of the answer. 
Result so far: 1617.0
If we take 399 away from 420, we end up with 21.
Fetch the next digit (4) from the dividend, attach it to 21 and continue: 214 / 57

Step 6:
The number 57 fits into 214 3 times, leaving a remainder of 43.
The next digit of our result is 3. 
Result so far: 16173.0
If we take 171 away from 214, we end up 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 7:
When dividing 430 by 57, we get 7 with a remainder of 31.
The next digit of our result is 7. 
Result so far: 16173.7
Subtracting 399 from 430 leaves us 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 8:
If we divide 310 by 57, we get 5 and a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 16173.75
Subtract 285 from 310 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 9:
57 can be fit into 250 4 times, resulting in a remainder of 22.
The number 4 becomes the next digit in our result. 
Result so far: 16173.754
The remainder is 22 after subtracting 228 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 10:
57 can be fit into 220 3 times, resulting in a remainder of 49.
Write down 3 as next digit of the result. 
Result so far: 16173.7543
If we subtract 171 from 220, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 11:
When dividing 490 by 57, we get 8 with a remainder of 34.
The number 8 becomes the next digit in our result. 
Result so far: 16173.75438
Subtract 456 from 490 to get 34.
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 12:
57 can be fit into 340 5 times, resulting in a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 16173.754385
If we take 285 away from 340, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 13:
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: 16173.7543859
Deduct 513 from 550 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 14:
57 goes into 370 6 times with a remainder of 28.
Record the quotient 6 as the next digit in the result. 
Result so far: 16173.75438596
Subtracting 342 from 370 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The quotient of the division is 16173.75438596, and the remainder is 2.8e-08.