717968 divided by 51 
The aim is to understand the frequency of 51 in 717968.

On to step 1:
51 can be fit into 7 0 times, resulting in a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 51

Moving on to step 2:
When dividing 71 by 51, we get 1 with a remainder of 20.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 51 from 71 leaves us with 20.
Grab the next digit (7) from the dividend, add it to 20, then carry on: 207 / 51

On to step 3:
51 can be fit into 207 4 times, resulting in a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtracting 204 from 207 leaves us with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 51

Step 4:
39 divided by 51 is 0 with a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 140.0
If we subtract 0 from 39, we get 39.
Grab the next digit (6) from the dividend, add it to 39, then carry on: 396 / 51

On to step 5:
When dividing 396 by 51, we get 7 with a remainder of 39.
Put 7 as the next digit of the answer. 
Result so far: 1407.0
If we subtract 357 from 396, we get 39.
Bring next digit (8) of the dividend behind the 39 and repeat the process: 398 / 51

On to step 6:
If we divide 398 by 51, we get 7 and a remainder of 41.
Record the quotient 7 as the next digit in the result. 
Result so far: 14077.0
Subtracting 357 from 398 leaves us 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 7:
When dividing 410 by 51, we get 8 with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 14077.8
If we take 408 away from 410, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
If we divide 20 by 51, we get 0 and a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 14077.8
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
51 goes into 200 3 times with a remainder of 47.
Put 3 as the next digit of the answer. 
Result so far: 14077.803
If we take 153 away from 200, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 10:
When dividing 470 by 51, we get 9 with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 14077.8039
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.

Step 11:
The number 51 fits into 110 2 times, leaving a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 14077.80392
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.

Advancing to step 12:
51 goes into 80 1 times with a remainder of 29.
The next digit of our result is 1. 
Result so far: 14077.803921
Deduct 51 from 80 and we're left 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.

Advancing to step 13:
When dividing 290 by 51, we get 5 with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 14077.8039215
Subtracting 255 from 290 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 14:
The number 51 fits into 350 6 times, leaving a remainder of 44.
Write down 6 as next digit of the result. 
Result so far: 14077.80392156
Deduct 306 from 350 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

After the division, we end up with 14077.80392156 and a remainder of 4.4e-08.