We look at the division of 517547 by 68 
The aim is to understand the frequency of 68 in 517547.

Advancing to step 1:
68 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 68

Advancing to step 2:
68 goes into 51 0 times with a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Append the next digit (7) from the dividend to 51 and continue with: 517 / 68

Going ahead to step 3:
If we divide 517 by 68, we get 7 and a remainder of 41.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtract 476 from 517 to get 41.
Take the next digit (5) from the dividend and append it to 41, then repeat: 415 / 68

Step 4:
415 divided by 68 is 6 with a remainder of 7.
The next digit of our result is 6. 
Result so far: 76.0
The remainder is 7 after subtracting 408 from 415.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 68

Advancing to step 5:
68 can be fit into 74 1 times, resulting in a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 761.0
Subtracting 68 from 74 leaves us with 6.
Bring next digit (7) of the dividend behind the 6 and repeat the process: 67 / 68

Advancing to step 6:
68 can be fit into 67 0 times, resulting in a remainder of 67.
Record the quotient 0 as the next digit in the result. 
Result so far: 7610.0
If we subtract 0 from 67, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Advancing to step 7:
68 goes into 670 9 times with a remainder of 58.
Put 9 as the next digit of the answer. 
Result so far: 7610.9
If we subtract 612 from 670, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 8:
When dividing 580 by 68, we get 8 with a remainder of 36.
Write down 8 as next digit of the result. 
Result so far: 7610.98
If we subtract 544 from 580, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 9:
360 divided by 68 is 5 with a remainder of 20.
The next digit of our result is 5. 
Result so far: 7610.985
Deduct 340 from 360 and we're left 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.

Going ahead to step 10:
The number 68 fits into 200 2 times, leaving a remainder of 64.
The next digit of our result is 2. 
Result so far: 7610.9852
Subtract 136 from 200 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 11:
If we divide 640 by 68, we get 9 and a remainder of 28.
Record the quotient 9 as the next digit in the result. 
Result so far: 7610.98529
Subtracting 612 from 640 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 12:
The number 68 fits into 280 4 times, leaving a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 7610.985294
Deduct 272 from 280 and we're left 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 13:
68 can be fit into 80 1 times, resulting in a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 7610.9852941
If we take 68 away from 80, we end up 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.

Going ahead to step 14:
When dividing 120 by 68, we get 1 with a remainder of 52.
The next digit of our result is 1. 
Result so far: 7610.98529411
Deduct 68 from 120 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

After the division, we end up with 7610.98529411 and a remainder of 5.2e-08.