820305 ÷ 57 
The aim is to understand the frequency of 57 in 820305.

Step 1:
When dividing 8 by 57, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (2) from the dividend and append it to 8, then repeat: 82 / 57

Let's proceed to step 2:
57 goes into 82 1 times with a remainder of 25.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 57 from 82 and we're left with 25.
Take the next digit (0) from the dividend and append it to 25, then repeat: 250 / 57

Let's proceed to step 3:
If we divide 250 by 57, we get 4 and a remainder of 22.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtracting 228 from 250 leaves us with 22.
Fetch the next digit (3) from the dividend, attach it to 22 and continue: 223 / 57

Step 4:
When dividing 223 by 57, we get 3 with a remainder of 52.
The next digit of our result is 3. 
Result so far: 143.0
Deduct 171 from 223 and we're left with 52.
Take the next digit (0) from the dividend and append it to 52, then repeat: 520 / 57

Going ahead to step 5:
The number 57 fits into 520 9 times, leaving a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 1439.0
Subtract 513 from 520 to get 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 57

Advancing to step 6:
When dividing 75 by 57, we get 1 with a remainder of 18.
The next digit of our result is 1. 
Result so far: 14391.0
If we subtract 57 from 75, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 7:
The number 57 fits into 180 3 times, leaving a remainder of 9.
Record the quotient 3 as the next digit in the result. 
Result so far: 14391.3
The remainder is 9 after subtracting 171 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 8:
When dividing 90 by 57, we get 1 with a remainder of 33.
The number 1 becomes the next digit in our result. 
Result so far: 14391.31
If we take 57 away from 90, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 9:
When dividing 330 by 57, we get 5 with a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 14391.315
If we take 285 away from 330, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 10:
57 goes into 450 7 times with a remainder of 51.
Use 7 as the next digit of our solution. 
Result so far: 14391.3157
If we take 399 away from 450, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 11:
The number 57 fits into 510 8 times, leaving a remainder of 54.
The number 8 becomes the next digit in our result. 
Result so far: 14391.31578
Subtract 456 from 510 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 12:
540 divided by 57 is 9 with a remainder of 27.
The next digit of our result is 9. 
Result so far: 14391.315789
Subtract 513 from 540 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 13:
270 divided by 57 is 4 with a remainder of 42.
Write down 4 as next digit of the result. 
Result so far: 14391.3157894
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.

On to step 14:
The number 57 fits into 420 7 times, leaving a remainder of 21.
The next digit of our result is 7. 
Result so far: 14391.31578947
If we subtract 399 from 420, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

The quotient of the division is 14391.31578947, and the remainder is 2.1e-08.