703664 divided by 18 
The aim is to understand the frequency of 18 in 703664.

Going ahead 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
If we subtract 0 from 7, we get 7.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 18

Step 2:
If we divide 70 by 18, we get 3 and a remainder of 16.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 54 from 70 leaves us with 16.
Take the next digit (3) from the dividend and append it to 16, then repeat: 163 / 18

Going ahead to step 3:
If we divide 163 by 18, we get 9 and a remainder of 1.
The next digit of our result is 9. 
Result so far: 39.0
Subtract 162 from 163 to get 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 18

Let's proceed to step 4:
The number 18 fits into 16 0 times, leaving a remainder of 16.
The next digit of our result is 0. 
Result so far: 390.0
Deduct 0 from 16 and we're left with 16.
Append the next digit (6) from the dividend to 16 and continue with: 166 / 18

On to step 5:
When dividing 166 by 18, we get 9 with a remainder of 4.
Record the quotient 9 as the next digit in the result. 
Result so far: 3909.0
The remainder is 4 after subtracting 162 from 166.
Fetch the next digit (4) from the dividend, attach it to 4 and continue: 44 / 18

Advancing to step 6:
18 can be fit into 44 2 times, resulting in a remainder of 8.
The next digit of our result is 2. 
Result so far: 39092.0
Subtract 36 from 44 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.

On to step 7:
If we divide 80 by 18, we get 4 and a remainder of 8.
The next digit of our result is 4. 
Result so far: 39092.4
If we take 72 away from 80, we end up 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.

On to step 8:
18 can be fit into 80 4 times, resulting in a remainder of 8.
The next digit of our result is 4. 
Result so far: 39092.44
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.

The final outcome is 39092.44, with a leftover of 0.008.