We divide 80104396 by 18
The aim is to understand the frequency of 18 in 80104396.

Moving on to step 1:
18 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 18

On to step 2:
80 divided by 18 is 4 with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 72 from 80 and we're left with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 18

Advancing to step 3:
18 goes into 81 4 times with a remainder of 9.
The number 4 becomes the next digit in our result. 
Result so far: 44.0
The remainder is 9 after subtracting 72 from 81.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 18

Going ahead to step 4:
When dividing 90 by 18, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 445.0
The remainder is 0 after subtracting 90 from 90.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 18

Going ahead to step 5:
18 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 4450.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 18

Going ahead to step 6:
When dividing 43 by 18, we get 2 with a remainder of 7.
Write down 2 as next digit of the result. 
Result so far: 44502.0
Subtract 36 from 43 to get 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 18

On to step 7:
18 goes into 79 4 times with a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 445024.0
If we take 72 away from 79, we end up with 7.
Include the next digit (6) from the dividend after 7, then repeat: 76 / 18

Advancing to step 8:
18 can be fit into 76 4 times, resulting in a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 4450244.0
Subtract 72 from 76 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.

Moving on to step 9:
18 can be fit into 40 2 times, resulting in a remainder of 4.
The next digit of our result is 2. 
Result so far: 4450244.2
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 10:
18 goes into 40 2 times with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 4450244.22
Deduct 36 from 40 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 4450244.22, with a leftover of 0.004.