We're dividing 723889 by 18 
We want to divide 723889 by 18.

On to step 1:
The number 18 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 18

On to step 2:
18 goes into 72 4 times with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 72 from 72 to get 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 18

Advancing to step 3:
When dividing 3 by 18, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
If we subtract 0 from 3, we get 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 18

Moving on to step 4:
18 goes into 38 2 times with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 402.0
Deduct 36 from 38 and we're left with 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 18

Step 5:
18 goes into 28 1 times with a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 4021.0
If we subtract 18 from 28, we get 10.
Bring next digit (9) of the dividend behind the 10 and repeat the process: 109 / 18

Advancing to step 6:
The number 18 fits into 109 6 times, leaving a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 40216.0
Deduct 108 from 109 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
18 goes into 10 0 times with a remainder of 10.
The next digit of our result is 0. 
Result so far: 40216.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
100 divided by 18 is 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 40216.05
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 9:
18 goes into 100 5 times with a remainder of 10.
The next digit of our result is 5. 
Result so far: 40216.055
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 40216.055 with a balance of 0.001.