Let's divide 847720 by 51
The aim is to understand the frequency of 51 in 847720.

Going ahead to step 1:
If we divide 8 by 51, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 51

Let's proceed to step 2:
When dividing 84 by 51, we get 1 with a remainder of 33.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 51 away from 84, we end up with 33.
Grab the next digit (7) from the dividend, add it to 33, then carry on: 337 / 51

Advancing to step 3:
When dividing 337 by 51, we get 6 with a remainder of 31.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Subtract 306 from 337 to get 31.
Append the next digit (7) from the dividend to 31 and continue with: 317 / 51

Going ahead to step 4:
51 can be fit into 317 6 times, resulting in a remainder of 11.
The next digit of our result is 6. 
Result so far: 166.0
The remainder is 11 after subtracting 306 from 317.
Bring next digit (2) of the dividend behind the 11 and repeat the process: 112 / 51

Moving on to step 5:
If we divide 112 by 51, we get 2 and a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 1662.0
If we subtract 102 from 112, we get 10.
Include the next digit (0) from the dividend after 10, then repeat: 100 / 51

On to step 6:
If we divide 100 by 51, we get 1 and a remainder of 49.
Record the quotient 1 as the next digit in the result. 
Result so far: 16621.0
Deduct 51 from 100 and we're left with 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 7:
The number 51 fits into 490 9 times, leaving a remainder of 31.
Put 9 as the next digit of the answer. 
Result so far: 16621.9
Subtract 459 from 490 to get 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 51, we get 6 and a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 16621.96
The remainder is 4 after subtracting 306 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
51 goes into 40 0 times with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 16621.96
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
400 divided by 51 is 7 with a remainder of 43.
Put 7 as the next digit of the answer. 
Result so far: 16621.9607
Subtracting 357 from 400 leaves us 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.

Going ahead to step 11:
When dividing 430 by 51, we get 8 with a remainder of 22.
Put 8 as the next digit of the answer. 
Result so far: 16621.96078
If we take 408 away from 430, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 12:
51 goes into 220 4 times with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 16621.960784
Subtracting 204 from 220 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 13:
51 goes into 160 3 times with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 16621.9607843
Deduct 153 from 160 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 14:
If we divide 70 by 51, we get 1 and a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 16621.96078431
If we take 51 away from 70, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The final outcome is 16621.96078431, with a leftover of 1.9e-08.