43240 ÷ 18 
Our goal is to divide 43240 by 18.

Advancing to step 1:
If we divide 4 by 18, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 18

On to step 2:
When dividing 43 by 18, we get 2 with a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 36 away from 43, we end up with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 18

On to step 3:
72 divided by 18 is 4 with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
Subtracting 72 from 72 leaves us with 0.
Append the next digit (4) from the dividend to 0 and continue with: 4 / 18

Going ahead to step 4:
18 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 240.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 18

Going ahead to step 5:
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: 2402.0
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 6:
The number 18 fits into 40 2 times, leaving a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 2402.2
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.

Step 7:
18 goes into 40 2 times with a remainder of 4.
The next digit of our result is 2. 
Result so far: 2402.22
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.

The final outcome is 2402.22, with a leftover of 0.004.