We divide 868612 by 18
The aim is to understand the frequency of 18 in 868612.

Going ahead to step 1:
8 divided by 18 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 18

Moving on to step 2:
86 divided by 18 is 4 with a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtracting 72 from 86 leaves us with 14.
Grab the next digit (8) from the dividend, add it to 14, then carry on: 148 / 18

Step 3:
18 can be fit into 148 8 times, resulting in a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 48.0
Subtract 144 from 148 to get 4.
Take the next digit (6) from the dividend and append it to 4, then repeat: 46 / 18

On to step 4:
18 can be fit into 46 2 times, resulting in a remainder of 10.
The next digit of our result is 2. 
Result so far: 482.0
Deduct 36 from 46 and we're left with 10.
Grab the next digit (1) from the dividend, add it to 10, then carry on: 101 / 18

On to step 5:
The number 18 fits into 101 5 times, leaving a remainder of 11.
Use 5 as the next digit of our solution. 
Result so far: 4825.0
If we subtract 90 from 101, we get 11.
Bring next digit (2) of the dividend behind the 11 and repeat the process: 112 / 18

Advancing to step 6:
When dividing 112 by 18, we get 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 48256.0
If we subtract 108 from 112, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 7:
18 can be fit into 40 2 times, resulting in a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 48256.2
If we subtract 36 from 40, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 8:
The number 18 fits into 40 2 times, leaving a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 48256.22
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 48256.22 with a remaining 0.004.