Let's divide 315225 by 18
We want to figure out the number of times 315225 can be divided by 18.

Advancing to step 1:
The number 18 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 18

On to step 2:
18 can be fit into 31 1 times, resulting in a remainder of 13.
The next digit of our result is 1. 
Result so far: 1.0
If we take 18 away from 31, we end up with 13.
Include the next digit (5) from the dividend after 13, then repeat: 135 / 18

Let's proceed to step 3:
If we divide 135 by 18, we get 7 and a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 17.0
If we subtract 126 from 135, we get 9.
Take the next digit (2) from the dividend and append it to 9, then repeat: 92 / 18

Going ahead to step 4:
18 can be fit into 92 5 times, resulting in a remainder of 2.
Use 5 as the next digit of our solution. 
Result so far: 175.0
If we subtract 90 from 92, we get 2.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 18

Moving on to step 5:
The number 18 fits into 22 1 times, leaving a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 1751.0
Deduct 18 from 22 and we're left with 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 18

Advancing to step 6:
45 divided by 18 is 2 with a remainder of 9.
The next digit of our result is 2. 
Result so far: 17512.0
If we take 36 away from 45, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
If we divide 90 by 18, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 17512.5
Subtracting 90 from 90 leaves us 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.

Advancing to step 8:
The number 18 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 17512.5
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.

Step 9:
0 divided by 18 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 17512.5
If we take 0 away from 0, 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.

The quotient of the division is 17512.5, and the remainder is 0.0.