231817 ÷ 18 
We want to figure out the number of times 231817 can be divided by 18.

Going ahead to step 1:
When dividing 2 by 18, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 18

On to step 2:
23 divided by 18 is 1 with a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 5 after subtracting 18 from 23.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 18

Going ahead to step 3:
If we divide 51 by 18, we get 2 and a remainder of 15.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
The remainder is 15 after subtracting 36 from 51.
Fetch the next digit (8) from the dividend, attach it to 15 and continue: 158 / 18

Let's proceed to step 4:
18 can be fit into 158 8 times, resulting in a remainder of 14.
Write down 8 as next digit of the result. 
Result so far: 128.0
Subtracting 144 from 158 leaves us with 14.
Bring next digit (1) of the dividend behind the 14 and repeat the process: 141 / 18

Step 5:
If we divide 141 by 18, we get 7 and a remainder of 15.
Record the quotient 7 as the next digit in the result. 
Result so far: 1287.0
If we take 126 away from 141, we end up with 15.
Fetch the next digit (7) from the dividend, attach it to 15 and continue: 157 / 18

Step 6:
18 can be fit into 157 8 times, resulting in a remainder of 13.
The next digit of our result is 8. 
Result so far: 12878.0
The remainder is 13 after subtracting 144 from 157.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
18 can be fit into 130 7 times, resulting in a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 12878.7
Deduct 126 from 130 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.

Moving on to step 8:
When dividing 40 by 18, we get 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 12878.72
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.

Moving on to step 9:
40 divided by 18 is 2 with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 12878.722
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.

The final outcome is 12878.722, with a leftover of 0.0004.