We look at the division of 219836 by 68 
The aim is to understand the frequency of 68 in 219836.

Step 1:
If we divide 2 by 68, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 68

Let's proceed to step 2:
21 divided by 68 is 0 with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Grab the next digit (9) from the dividend, add it to 21, then carry on: 219 / 68

On to step 3:
The number 68 fits into 219 3 times, leaving a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 204 from 219 leaves us with 15.
Grab the next digit (8) from the dividend, add it to 15, then carry on: 158 / 68

Going ahead to step 4:
When dividing 158 by 68, we get 2 with a remainder of 22.
Put 2 as the next digit of the answer. 
Result so far: 32.0
If we take 136 away from 158, we end up with 22.
Bring next digit (3) of the dividend behind the 22 and repeat the process: 223 / 68

On to step 5:
If we divide 223 by 68, we get 3 and a remainder of 19.
The number 3 becomes the next digit in our result. 
Result so far: 323.0
Deduct 204 from 223 and we're left with 19.
Bring next digit (6) of the dividend behind the 19 and repeat the process: 196 / 68

On to step 6:
68 can be fit into 196 2 times, resulting in a remainder of 60.
Record the quotient 2 as the next digit in the result. 
Result so far: 3232.0
If we take 136 away from 196, we end up 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 7:
When dividing 600 by 68, we get 8 with a remainder of 56.
Record the quotient 8 as the next digit in the result. 
Result so far: 3232.8
The remainder is 56 after subtracting 544 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 8:
The number 68 fits into 560 8 times, leaving a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 3232.88
Subtracting 544 from 560 leaves us 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.

After the division, we end up with 3232.88 and a remainder of 0.016.