We look at the division of 666304 by 68 
The aim is to understand the frequency of 68 in 666304.

On to step 1:
68 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 68

Moving on to step 2:
If we divide 66 by 68, we get 0 and a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Grab the next digit (6) from the dividend, add it to 66, then carry on: 666 / 68

Going ahead to step 3:
When dividing 666 by 68, we get 9 with a remainder of 54.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtract 612 from 666 to get 54.
Bring next digit (3) of the dividend behind the 54 and repeat the process: 543 / 68

Moving on to step 4:
543 divided by 68 is 7 with a remainder of 67.
The next digit of our result is 7. 
Result so far: 97.0
The remainder is 67 after subtracting 476 from 543.
Bring next digit (0) of the dividend behind the 67 and repeat the process: 670 / 68

Going ahead to step 5:
If we divide 670 by 68, we get 9 and a remainder of 58.
Use 9 as the next digit of our solution. 
Result so far: 979.0
The remainder is 58 after subtracting 612 from 670.
Append the next digit (4) from the dividend to 58 and continue with: 584 / 68

On to step 6:
If we divide 584 by 68, we get 8 and a remainder of 40.
Put 8 as the next digit of the answer. 
Result so far: 9798.0
Deduct 544 from 584 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 7:
If we divide 400 by 68, we get 5 and a remainder of 60.
Use 5 as the next digit of our solution. 
Result so far: 9798.5
Subtract 340 from 400 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 8:
600 divided by 68 is 8 with a remainder of 56.
Write down 8 as next digit of the result. 
Result so far: 9798.58
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.

Let's proceed to step 9:
If we divide 560 by 68, we get 8 and a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 9798.588
If we take 544 away from 560, we end up with 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 quotient of the division is 9798.588, and the remainder is 0.0016.