We're dividing 730074 by 18 
The aim is to understand the frequency of 18 in 730074.

On to step 1:
7 divided by 18 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 18

On to step 2:
If we divide 73 by 18, we get 4 and a remainder of 1.
The next digit of our result is 4. 
Result so far: 4.0
If we take 72 away from 73, we end up with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 18

Step 3:
When dividing 10 by 18, we get 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 40.0
If we take 0 away from 10, we end up with 10.
Grab the next digit (0) from the dividend, add it to 10, then carry on: 100 / 18

Let's proceed to step 4:
100 divided by 18 is 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 405.0
Deduct 90 from 100 and we're left with 10.
Fetch the next digit (7) from the dividend, attach it to 10 and continue: 107 / 18

On to step 5:
The number 18 fits into 107 5 times, leaving a remainder of 17.
Put 5 as the next digit of the answer. 
Result so far: 4055.0
If we subtract 90 from 107, we get 17.
Grab the next digit (4) from the dividend, add it to 17, then carry on: 174 / 18

On to step 6:
174 divided by 18 is 9 with a remainder of 12.
The next digit of our result is 9. 
Result so far: 40559.0
Deduct 162 from 174 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 7:
120 divided by 18 is 6 with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 40559.6
Subtracting 108 from 120 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 8:
18 can be fit into 120 6 times, resulting in a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 40559.66
Deduct 108 from 120 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 40559.66, with a leftover of 0.012.