120415 ÷ 18 
Our goal is to divide 120415 by 18.

Going ahead to step 1:
When dividing 1 by 18, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 18

Moving on to step 2:
18 can be fit into 12 0 times, resulting in a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Append the next digit (0) from the dividend to 12 and continue with: 120 / 18

Let's proceed to step 3:
If we divide 120 by 18, we get 6 and a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Deduct 108 from 120 and we're left with 12.
Include the next digit (4) from the dividend after 12, then repeat: 124 / 18

Going ahead to step 4:
18 goes into 124 6 times with a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 66.0
The remainder is 16 after subtracting 108 from 124.
Append the next digit (1) from the dividend to 16 and continue with: 161 / 18

Step 5:
When dividing 161 by 18, we get 8 with a remainder of 17.
Record the quotient 8 as the next digit in the result. 
Result so far: 668.0
If we take 144 away from 161, we end up with 17.
Append the next digit (5) from the dividend to 17 and continue with: 175 / 18

On to step 6:
18 goes into 175 9 times with a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 6689.0
If we subtract 162 from 175, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

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: 6689.7
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.

Advancing to step 8:
40 divided by 18 is 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 6689.72
If we subtract 36 from 40, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
18 can be fit into 40 2 times, resulting in a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 6689.722
Subtract 36 from 40 to get 4.
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 6689.722, with a leftover of 0.0004.