630432 divided by 18 
The aim is to understand the frequency of 18 in 630432.

Going ahead to step 1:
18 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 18

Let's proceed to step 2:
18 can be fit into 63 3 times, resulting in a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 9 after subtracting 54 from 63.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 18

Advancing to step 3:
90 divided by 18 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 35.0
The remainder is 0 after subtracting 90 from 90.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 18

On to step 4:
If we divide 4 by 18, we get 0 and a remainder of 4.
The next digit of our result is 0. 
Result so far: 350.0
Deduct 0 from 4 and we're left with 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 18

Let's proceed to step 5:
If we divide 43 by 18, we get 2 and a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 3502.0
Deduct 36 from 43 and we're left with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 18

Step 6:
If we divide 72 by 18, we get 4 and a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 35024.0
If we take 72 away from 72, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
If we divide 0 by 18, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 35024.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
When dividing 0 by 18, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 35024.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 35024.0 with a remainder of 0.0.