We're dividing 539572 by 68 
The aim is to understand the frequency of 68 in 539572.

Going ahead to step 1:
If we divide 5 by 68, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 68

Advancing to step 2:
When dividing 53 by 68, we get 0 with a remainder of 53.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 53 to get 53.
Take the next digit (9) from the dividend and append it to 53, then repeat: 539 / 68

Let's proceed to step 3:
If we divide 539 by 68, we get 7 and a remainder of 63.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 476 from 539 to get 63.
Append the next digit (5) from the dividend to 63 and continue with: 635 / 68

Advancing to step 4:
When dividing 635 by 68, we get 9 with a remainder of 23.
Write down 9 as next digit of the result. 
Result so far: 79.0
Subtract 612 from 635 to get 23.
Append the next digit (7) from the dividend to 23 and continue with: 237 / 68

Let's proceed to step 5:
When dividing 237 by 68, we get 3 with a remainder of 33.
The next digit of our result is 3. 
Result so far: 793.0
The remainder is 33 after subtracting 204 from 237.
Bring next digit (2) of the dividend behind the 33 and repeat the process: 332 / 68

Advancing to step 6:
If we divide 332 by 68, we get 4 and a remainder of 60.
Write down 4 as next digit of the result. 
Result so far: 7934.0
Subtracting 272 from 332 leaves us 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.

Step 7:
When dividing 600 by 68, we get 8 with a remainder of 56.
The number 8 becomes the next digit in our result. 
Result so far: 7934.8
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.

On to step 8:
68 goes into 560 8 times with a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 7934.88
Deduct 544 from 560 and we're left 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 final result is 7934.88 with a remainder of 0.016.