413350 divided by 18 
The aim is to understand the frequency of 18 in 413350.

Advancing to step 1:
The number 18 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (1) of the dividend behind the 4 and repeat the process: 41 / 18

Advancing to step 2:
41 divided by 18 is 2 with a remainder of 5.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 36 from 41 leaves us with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 18

On to step 3:
53 divided by 18 is 2 with a remainder of 17.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Subtract 36 from 53 to get 17.
Bring next digit (3) of the dividend behind the 17 and repeat the process: 173 / 18

Step 4:
The number 18 fits into 173 9 times, leaving a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 229.0
If we subtract 162 from 173, we get 11.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 18

Let's proceed to step 5:
115 divided by 18 is 6 with a remainder of 7.
The next digit of our result is 6. 
Result so far: 2296.0
The remainder is 7 after subtracting 108 from 115.
Bring next digit (0) of the dividend behind the 7 and repeat the process: 70 / 18

Going ahead to step 6:
The number 18 fits into 70 3 times, leaving a remainder of 16.
Put 3 as the next digit of the answer. 
Result so far: 22963.0
The remainder is 16 after subtracting 54 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 7:
If we divide 160 by 18, we get 8 and a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 22963.8
If we subtract 144 from 160, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 8:
The number 18 fits into 160 8 times, leaving a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 22963.88
Subtract 144 from 160 to get 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 22963.88 and a remainder of 0.016.