We divide 693404 by 18
The aim is to understand the frequency of 18 in 693404.

Let's proceed to step 1:
When dividing 6 by 18, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 18

Step 2:
If we divide 69 by 18, we get 3 and a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 54 from 69 and we're left with 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 18

Going ahead to step 3:
18 can be fit into 153 8 times, resulting in a remainder of 9.
Write down 8 as next digit of the result. 
Result so far: 38.0
Subtracting 144 from 153 leaves us with 9.
Bring next digit (4) of the dividend behind the 9 and repeat the process: 94 / 18

Let's proceed to step 4:
The number 18 fits into 94 5 times, leaving a remainder of 4.
Write down 5 as next digit of the result. 
Result so far: 385.0
The remainder is 4 after subtracting 90 from 94.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 18

Step 5:
When dividing 40 by 18, we get 2 with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 3852.0
Deduct 36 from 40 and we're left with 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 18

On to step 6:
If we divide 44 by 18, we get 2 and a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 38522.0
Deduct 36 from 44 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 7:
The number 18 fits into 80 4 times, leaving a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 38522.4
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 8:
18 goes into 80 4 times with a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 38522.44
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 38522.44 with a remaining 0.008.