We divide 133512 by 51
The aim is to understand the frequency of 51 in 133512.

On to step 1:
51 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 51

On to step 2:
When dividing 13 by 51, we get 0 with a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 13 leaves us with 13.
Take the next digit (3) from the dividend and append it to 13, then repeat: 133 / 51

On to step 3:
133 divided by 51 is 2 with a remainder of 31.
The next digit of our result is 2. 
Result so far: 2.0
If we take 102 away from 133, we end up with 31.
Append the next digit (5) from the dividend to 31 and continue with: 315 / 51

Moving on to step 4:
When dividing 315 by 51, we get 6 with a remainder of 9.
Use 6 as the next digit of our solution. 
Result so far: 26.0
Subtracting 306 from 315 leaves us with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 51

Going ahead to step 5:
91 divided by 51 is 1 with a remainder of 40.
Record the quotient 1 as the next digit in the result. 
Result so far: 261.0
Subtracting 51 from 91 leaves us with 40.
Append the next digit (2) from the dividend to 40 and continue with: 402 / 51

Moving on to step 6:
402 divided by 51 is 7 with a remainder of 45.
Record the quotient 7 as the next digit in the result. 
Result so far: 2617.0
The remainder is 45 after subtracting 357 from 402.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 7:
The number 51 fits into 450 8 times, leaving a remainder of 42.
The next digit of our result is 8. 
Result so far: 2617.8
If we take 408 away from 450, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 8:
51 can be fit into 420 8 times, resulting in a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 2617.88
Subtracting 408 from 420 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 2617.88 and a remainder of 0.012.