721252 ÷ 18 
We're looking to find how many times 18 goes into 721252.

Step 1:
When dividing 7 by 18, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 18

Going ahead to step 2:
18 goes into 72 4 times with a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 72 from 72 leaves us with 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 18

Advancing to step 3:
If we divide 1 by 18, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 40.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 18

On to step 4:
18 goes into 12 0 times with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 400.0
Subtracting 0 from 12 leaves us with 12.
Append the next digit (5) from the dividend to 12 and continue with: 125 / 18

Step 5:
When dividing 125 by 18, we get 6 with a remainder of 17.
Put 6 as the next digit of the answer. 
Result so far: 4006.0
The remainder is 17 after subtracting 108 from 125.
Take the next digit (2) from the dividend and append it to 17, then repeat: 172 / 18

Let's proceed to step 6:
When dividing 172 by 18, we get 9 with a remainder of 10.
The next digit of our result is 9. 
Result so far: 40069.0
If we take 162 away from 172, 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.

Moving on to step 7:
100 divided by 18 is 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 40069.5
If we subtract 90 from 100, we get 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:
The number 18 fits into 100 5 times, leaving a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 40069.55
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 40069.55, with a leftover of 0.01.