We divide 728945 by 18
We want to figure out the number of times 728945 can be divided by 18.

Step 1:
18 can be fit into 7 0 times, resulting in 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.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 18

Moving on to step 2:
The number 18 fits into 72 4 times, leaving a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 4.0
The remainder is 0 after subtracting 72 from 72.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 18

On to step 3:
8 divided by 18 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 40.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (9) from the dividend, attach it to 8 and continue: 89 / 18

Advancing to step 4:
18 can be fit into 89 4 times, resulting in a remainder of 17.
Record the quotient 4 as the next digit in the result. 
Result so far: 404.0
Subtract 72 from 89 to get 17.
Grab the next digit (4) from the dividend, add it to 17, then carry on: 174 / 18

Moving on to step 5:
174 divided by 18 is 9 with a remainder of 12.
The next digit of our result is 9. 
Result so far: 4049.0
If we subtract 162 from 174, we get 12.
Include the next digit (5) from the dividend after 12, then repeat: 125 / 18

Advancing to step 6:
If we divide 125 by 18, we get 6 and a remainder of 17.
The next digit of our result is 6. 
Result so far: 40496.0
Deduct 108 from 125 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 7:
The number 18 fits into 170 9 times, leaving a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 40496.9
Deduct 162 from 170 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 8:
The number 18 fits into 80 4 times, leaving a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 40496.94
Subtracting 72 from 80 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 9:
If we divide 80 by 18, we get 4 and a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 40496.944
If we take 72 away from 80, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The quotient of the division is 40496.944, and the remainder is 0.0008.