We look at the division of 731406 by 18 
The aim is to understand the frequency of 18 in 731406.

Moving on to step 1:
7 divided by 18 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 18

Moving on to step 2:
18 goes into 73 4 times with a remainder of 1.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 1 after subtracting 72 from 73.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 18

Going ahead to step 3:
18 can be fit into 11 0 times, resulting in a remainder of 11.
Write down 0 as next digit of the result. 
Result so far: 40.0
Subtract 0 from 11 to get 11.
Append the next digit (4) from the dividend to 11 and continue with: 114 / 18

Advancing to step 4:
18 goes into 114 6 times with a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 406.0
If we take 108 away from 114, we end up with 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 18

Going ahead to step 5:
18 can be fit into 60 3 times, resulting in a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 4063.0
Subtract 54 from 60 to get 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 18

Moving on to step 6:
If we divide 66 by 18, we get 3 and a remainder of 12.
The next digit of our result is 3. 
Result so far: 40633.0
Subtracting 54 from 66 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.

Let's proceed to step 7:
120 divided by 18 is 6 with a remainder of 12.
The next digit of our result is 6. 
Result so far: 40633.6
If we subtract 108 from 120, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 8:
18 can be fit into 120 6 times, resulting in a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 40633.66
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.

In conclusion, the division gives 40633.66 with a balance of 0.012.