308912 divided by 51 
The aim is to understand the frequency of 51 in 308912.

Step 1:
51 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 51

On to step 2:
If we divide 30 by 51, we get 0 and a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 30 to get 30.
Bring next digit (8) of the dividend behind the 30 and repeat the process: 308 / 51

Moving on to step 3:
The number 51 fits into 308 6 times, leaving a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 306 from 308 and we're left with 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 51

On to step 4:
51 can be fit into 29 0 times, resulting in a remainder of 29.
The next digit of our result is 0. 
Result so far: 60.0
Subtract 0 from 29 to get 29.
Append the next digit (1) from the dividend to 29 and continue with: 291 / 51

Moving on to step 5:
51 can be fit into 291 5 times, resulting in a remainder of 36.
The next digit of our result is 5. 
Result so far: 605.0
If we subtract 255 from 291, we get 36.
Take the next digit (2) from the dividend and append it to 36, then repeat: 362 / 51

Moving on to step 6:
If we divide 362 by 51, we get 7 and a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 6057.0
If we subtract 357 from 362, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
The number 51 fits into 50 0 times, leaving a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 6057.0
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 8:
When dividing 500 by 51, we get 9 with a remainder of 41.
The number 9 becomes the next digit in our result. 
Result so far: 6057.09
If we take 459 away from 500, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 9:
51 goes into 410 8 times with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 6057.098
If we subtract 408 from 410, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 10:
51 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 6057.098
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 11:
If we divide 200 by 51, we get 3 and a remainder of 47.
Record the quotient 3 as the next digit in the result. 
Result so far: 6057.09803
Subtract 153 from 200 to get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 12:
When dividing 470 by 51, we get 9 with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 6057.098039
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.

Advancing to step 13:
When dividing 110 by 51, we get 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 6057.0980392
Subtracting 102 from 110 leaves us with 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:
80 divided by 51 is 1 with a remainder of 29.
Write down 1 as next digit of the result. 
Result so far: 6057.09803921
If we take 51 away from 80, we end up 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.

The final result is 6057.09803921 with a remainder of 2.9e-08.