378963 ÷ 57 
The aim is to understand the frequency of 57 in 378963.

Step 1:
3 divided by 57 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (7) of the dividend behind the 3 and repeat the process: 37 / 57

Advancing to step 2:
When dividing 37 by 57, we get 0 with a remainder of 37.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 37 and we're left with 37.
Bring next digit (8) of the dividend behind the 37 and repeat the process: 378 / 57

Advancing to step 3:
57 can be fit into 378 6 times, resulting in a remainder of 36.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtracting 342 from 378 leaves us with 36.
Include the next digit (9) from the dividend after 36, then repeat: 369 / 57

Step 4:
The number 57 fits into 369 6 times, leaving a remainder of 27.
The number 6 becomes the next digit in our result. 
Result so far: 66.0
Deduct 342 from 369 and we're left with 27.
Append the next digit (6) from the dividend to 27 and continue with: 276 / 57

Going ahead to step 5:
57 can be fit into 276 4 times, resulting in a remainder of 48.
Use 4 as the next digit of our solution. 
Result so far: 664.0
Subtract 228 from 276 to get 48.
Fetch the next digit (3) from the dividend, attach it to 48 and continue: 483 / 57

Advancing to step 6:
The number 57 fits into 483 8 times, leaving a remainder of 27.
Use 8 as the next digit of our solution. 
Result so far: 6648.0
Deduct 456 from 483 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 7:
If we divide 270 by 57, we get 4 and a remainder of 42.
Record the quotient 4 as the next digit in the result. 
Result so far: 6648.4
Subtracting 228 from 270 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 8:
420 divided by 57 is 7 with a remainder of 21.
Put 7 as the next digit of the answer. 
Result so far: 6648.47
Subtracting 399 from 420 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 9:
57 goes into 210 3 times with a remainder of 39.
Put 3 as the next digit of the answer. 
Result so far: 6648.473
If we subtract 171 from 210, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 10:
If we divide 390 by 57, we get 6 and a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 6648.4736
Deduct 342 from 390 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 11:
57 goes into 480 8 times with a remainder of 24.
The next digit of our result is 8. 
Result so far: 6648.47368
Subtract 456 from 480 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 12:
When dividing 240 by 57, we get 4 with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 6648.473684
If we take 228 away from 240, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 13:
57 goes into 120 2 times with a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 6648.4736842
Subtract 114 from 120 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 14:
57 goes into 60 1 times with a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 6648.47368421
The remainder is 3 after subtracting 57 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

In conclusion, the division gives 6648.47368421 with a balance of 3e-09.