We look at the division of 966432 by 51 
The aim is to understand the frequency of 51 in 966432.

Going ahead to step 1:
When dividing 9 by 51, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (6) of the dividend behind the 9 and repeat the process: 96 / 51

On to step 2:
When dividing 96 by 51, we get 1 with a remainder of 45.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 51 from 96, we get 45.
Fetch the next digit (6) from the dividend, attach it to 45 and continue: 456 / 51

Going ahead to step 3:
456 divided by 51 is 8 with a remainder of 48.
Use 8 as the next digit of our solution. 
Result so far: 18.0
The remainder is 48 after subtracting 408 from 456.
Grab the next digit (4) from the dividend, add it to 48, then carry on: 484 / 51

Moving on to step 4:
484 divided by 51 is 9 with a remainder of 25.
Record the quotient 9 as the next digit in the result. 
Result so far: 189.0
Deduct 459 from 484 and we're left with 25.
Append the next digit (3) from the dividend to 25 and continue with: 253 / 51

On to step 5:
51 can be fit into 253 4 times, resulting in a remainder of 49.
Put 4 as the next digit of the answer. 
Result so far: 1894.0
The remainder is 49 after subtracting 204 from 253.
Fetch the next digit (2) from the dividend, attach it to 49 and continue: 492 / 51

Advancing to step 6:
51 goes into 492 9 times with a remainder of 33.
Write down 9 as next digit of the result. 
Result so far: 18949.0
Subtract 459 from 492 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 7:
51 can be fit into 330 6 times, resulting in a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 18949.6
The remainder is 24 after subtracting 306 from 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 8:
51 can be fit into 240 4 times, resulting in a remainder of 36.
Record the quotient 4 as the next digit in the result. 
Result so far: 18949.64
The remainder is 36 after subtracting 204 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 9:
51 can be fit into 360 7 times, resulting in a remainder of 3.
The next digit of our result is 7. 
Result so far: 18949.647
Subtracting 357 from 360 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 10:
When dividing 30 by 51, we get 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 18949.647
If we take 0 away from 30, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 11:
The number 51 fits into 300 5 times, leaving a remainder of 45.
The next digit of our result is 5. 
Result so far: 18949.64705
Subtracting 255 from 300 leaves us 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.

Advancing to step 12:
If we divide 450 by 51, we get 8 and a remainder of 42.
Use 8 as the next digit of our solution. 
Result so far: 18949.647058
Subtract 408 from 450 to 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.

Going ahead to step 13:
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: 18949.6470588
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.

The quotient of the division is 18949.6470588, and the remainder is 1.2e-07.