We look at the division of 862848 by 51 
The aim is to understand the frequency of 51 in 862848.

Step 1:
51 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 51

On to step 2:
86 divided by 51 is 1 with a remainder of 35.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 51 from 86 leaves us with 35.
Append the next digit (2) from the dividend to 35 and continue with: 352 / 51

Step 3:
If we divide 352 by 51, we get 6 and a remainder of 46.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we take 306 away from 352, we end up with 46.
Take the next digit (8) from the dividend and append it to 46, then repeat: 468 / 51

Step 4:
51 goes into 468 9 times with a remainder of 9.
The number 9 becomes the next digit in our result. 
Result so far: 169.0
Subtracting 459 from 468 leaves us with 9.
Append the next digit (4) from the dividend to 9 and continue with: 94 / 51

On to step 5:
51 goes into 94 1 times with a remainder of 43.
The number 1 becomes the next digit in our result. 
Result so far: 1691.0
Subtracting 51 from 94 leaves us with 43.
Take the next digit (8) from the dividend and append it to 43, then repeat: 438 / 51

Let's proceed to step 6:
The number 51 fits into 438 8 times, leaving a remainder of 30.
Put 8 as the next digit of the answer. 
Result so far: 16918.0
The remainder is 30 after subtracting 408 from 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 7:
51 goes into 300 5 times with a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 16918.5
Deduct 255 from 300 and we're left 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.

Let's proceed to step 8:
450 divided by 51 is 8 with a remainder of 42.
The number 8 becomes the next digit in our result. 
Result so far: 16918.58
If we subtract 408 from 450, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 9:
If we divide 420 by 51, we get 8 and a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 16918.588
Subtract 408 from 420 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 16918.588, with a leftover of 0.0012.