We look at the division of 659878 by 68 
The aim is to understand the frequency of 68 in 659878.

Going ahead to step 1:
6 divided by 68 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 68

Moving on to step 2:
65 divided by 68 is 0 with a remainder of 65.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 65 to get 65.
Take the next digit (9) from the dividend and append it to 65, then repeat: 659 / 68

Step 3:
When dividing 659 by 68, we get 9 with a remainder of 47.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we take 612 away from 659, we end up with 47.
Bring next digit (8) of the dividend behind the 47 and repeat the process: 478 / 68

Moving on to step 4:
68 goes into 478 7 times with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 97.0
Deduct 476 from 478 and we're left with 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 68

Advancing to step 5:
If we divide 27 by 68, we get 0 and a remainder of 27.
The number 0 becomes the next digit in our result. 
Result so far: 970.0
Deduct 0 from 27 and we're left with 27.
Include the next digit (8) from the dividend after 27, then repeat: 278 / 68

Going ahead to step 6:
If we divide 278 by 68, we get 4 and a remainder of 6.
The next digit of our result is 4. 
Result so far: 9704.0
Subtract 272 from 278 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 7:
If we divide 60 by 68, we get 0 and a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 9704.0
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 8:
600 divided by 68 is 8 with a remainder of 56.
The next digit of our result is 8. 
Result so far: 9704.08
If we subtract 544 from 600, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 9:
If we divide 560 by 68, we get 8 and a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 9704.088
Subtract 544 from 560 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final result is 9704.088 with a remainder of 0.0016.