We look at the division of 490827 by 68 
The aim is to understand the frequency of 68 in 490827.

On to step 1:
When dividing 4 by 68, we get 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 68

Step 2:
The number 68 fits into 49 0 times, leaving a remainder of 49.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 49 leaves us with 49.
Bring next digit (0) of the dividend behind the 49 and repeat the process: 490 / 68

Advancing to step 3:
When dividing 490 by 68, we get 7 with a remainder of 14.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 476 from 490 to get 14.
Bring next digit (8) of the dividend behind the 14 and repeat the process: 148 / 68

On to step 4:
68 goes into 148 2 times with a remainder of 12.
The next digit of our result is 2. 
Result so far: 72.0
Subtract 136 from 148 to get 12.
Bring next digit (2) of the dividend behind the 12 and repeat the process: 122 / 68

Moving on to step 5:
The number 68 fits into 122 1 times, leaving a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 721.0
Deduct 68 from 122 and we're left with 54.
Take the next digit (7) from the dividend and append it to 54, then repeat: 547 / 68

Going ahead to step 6:
If we divide 547 by 68, we get 8 and a remainder of 3.
Use 8 as the next digit of our solution. 
Result so far: 7218.0
Subtract 544 from 547 to get 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 7:
If we divide 30 by 68, we get 0 and a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 7218.0
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.

Step 8:
68 goes into 300 4 times with a remainder of 28.
Record the quotient 4 as the next digit in the result. 
Result so far: 7218.04
Deduct 272 from 300 and we're left 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 9:
The number 68 fits into 280 4 times, leaving a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 7218.044
If we take 272 away from 280, we end up 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.

The final result is 7218.044 with a remainder of 0.0008.