We look at the division of 492053 by 51 
The aim is to understand the frequency of 51 in 492053.

On to step 1:
When dividing 4 by 51, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 51

Going ahead to step 2:
51 can be fit into 49 0 times, resulting in a remainder of 49.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 49 and we're left with 49.
Include the next digit (2) from the dividend after 49, then repeat: 492 / 51

Moving on to step 3:
492 divided by 51 is 9 with a remainder of 33.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 459 from 492 to get 33.
Take the next digit (0) from the dividend and append it to 33, then repeat: 330 / 51

Moving on to step 4:
The number 51 fits into 330 6 times, leaving a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 96.0
Subtract 306 from 330 to get 24.
Take the next digit (5) from the dividend and append it to 24, then repeat: 245 / 51

On to step 5:
245 divided by 51 is 4 with a remainder of 41.
Record the quotient 4 as the next digit in the result. 
Result so far: 964.0
If we subtract 204 from 245, we get 41.
Take the next digit (3) from the dividend and append it to 41, then repeat: 413 / 51

Advancing to step 6:
The number 51 fits into 413 8 times, leaving a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 9648.0
The remainder is 5 after subtracting 408 from 413.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
When dividing 50 by 51, we get 0 with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 9648.0
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 8:
If we divide 500 by 51, we get 9 and a remainder of 41.
The next digit of our result is 9. 
Result so far: 9648.09
Subtract 459 from 500 to get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Step 9:
410 divided by 51 is 8 with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 9648.098
Subtracting 408 from 410 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 10:
The number 51 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 9648.098
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 11:
When dividing 200 by 51, we get 3 with a remainder of 47.
The number 3 becomes the next digit in our result. 
Result so far: 9648.09803
The remainder is 47 after subtracting 153 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 12:
51 goes into 470 9 times with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 9648.098039
Subtract 459 from 470 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 13:
51 can be fit into 110 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 9648.0980392
Subtract 102 from 110 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.

Step 14:
When dividing 80 by 51, we get 1 with a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 9648.09803921
Subtracting 51 from 80 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Our division results in 9648.09803921 with a remaining 2.9e-08.