We're dividing 731913 by 18 
We want to figure out the number of times 731913 can be divided by 18.

Step 1:
18 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 18

On to step 2:
If we divide 73 by 18, we get 4 and a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 72 from 73 and we're left with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 18

Going ahead to step 3:
The number 18 fits into 11 0 times, leaving a remainder of 11.
The number 0 becomes the next digit in our result. 
Result so far: 40.0
The remainder is 11 after subtracting 0 from 11.
Take the next digit (9) from the dividend and append it to 11, then repeat: 119 / 18

On to step 4:
18 goes into 119 6 times with a remainder of 11.
The next digit of our result is 6. 
Result so far: 406.0
Subtracting 108 from 119 leaves us with 11.
Grab the next digit (1) from the dividend, add it to 11, then carry on: 111 / 18

Moving on to step 5:
The number 18 fits into 111 6 times, leaving a remainder of 3.
Put 6 as the next digit of the answer. 
Result so far: 4066.0
If we subtract 108 from 111, we get 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 18

Step 6:
If we divide 33 by 18, we get 1 and a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 40661.0
If we take 18 away from 33, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 7:
When dividing 150 by 18, we get 8 with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 40661.8
Subtract 144 from 150 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 8:
60 divided by 18 is 3 with a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 40661.83
Subtracting 54 from 60 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 9:
18 goes into 60 3 times with a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 40661.833
Subtracting 54 from 60 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

After the division, we end up with 40661.833 and a remainder of 0.0006.