650729 ÷ 18 
The aim is to understand the frequency of 18 in 650729.

On to step 1:
When dividing 6 by 18, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 18

Advancing to step 2:
65 divided by 18 is 3 with a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 11 after subtracting 54 from 65.
Fetch the next digit (0) from the dividend, attach it to 11 and continue: 110 / 18

On to step 3:
If we divide 110 by 18, we get 6 and a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 36.0
The remainder is 2 after subtracting 108 from 110.
Grab the next digit (7) from the dividend, add it to 2, then carry on: 27 / 18

Moving on to step 4:
18 can be fit into 27 1 times, resulting in a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 361.0
If we subtract 18 from 27, we get 9.
Fetch the next digit (2) from the dividend, attach it to 9 and continue: 92 / 18

On to step 5:
When dividing 92 by 18, we get 5 with a remainder of 2.
Record the quotient 5 as the next digit in the result. 
Result so far: 3615.0
Subtract 90 from 92 to get 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 18

Going ahead to step 6:
If we divide 29 by 18, we get 1 and a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 36151.0
If we take 18 away from 29, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 7:
If we divide 110 by 18, we get 6 and a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 36151.6
Subtracting 108 from 110 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
20 divided by 18 is 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 36151.61
If we take 18 away from 20, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 9:
If we divide 20 by 18, we get 1 and a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 36151.611
Deduct 18 from 20 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Our division results in 36151.611 with a remaining 0.0002.