We look at the division of 80650 by 51 
The aim is to understand the frequency of 51 in 80650.

Moving on to step 1:
When dividing 8 by 51, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 51

Moving on to step 2:
80 divided by 51 is 1 with a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 51 from 80, we get 29.
Grab the next digit (6) from the dividend, add it to 29, then carry on: 296 / 51

Going ahead to step 3:
The number 51 fits into 296 5 times, leaving a remainder of 41.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
Deduct 255 from 296 and we're left with 41.
Include the next digit (5) from the dividend after 41, then repeat: 415 / 51

On to step 4:
51 goes into 415 8 times with a remainder of 7.
Write down 8 as next digit of the result. 
Result so far: 158.0
If we take 408 away from 415, we end up with 7.
Include the next digit (0) from the dividend after 7, then repeat: 70 / 51

Step 5:
When dividing 70 by 51, we get 1 with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 1581.0
Subtract 51 from 70 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 6:
When dividing 190 by 51, we get 3 with a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 1581.3
The remainder is 37 after subtracting 153 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 7:
51 goes into 370 7 times with a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 1581.37
Subtracting 357 from 370 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 8:
130 divided by 51 is 2 with a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 1581.372
The remainder is 28 after subtracting 102 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 9:
When dividing 280 by 51, we get 5 with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 1581.3725
Subtract 255 from 280 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 10:
When dividing 250 by 51, we get 4 with a remainder of 46.
Write down 4 as next digit of the result. 
Result so far: 1581.37254
Deduct 204 from 250 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 11:
51 goes into 460 9 times with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 1581.372549
Subtract 459 from 460 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 12:
10 divided by 51 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 1581.372549
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 13:
When dividing 100 by 51, we get 1 with a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 1581.37254901
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.

The final result is 1581.37254901 with a remainder of 4.9e-08.