Let's divide 721401 by 18
Our goal is to divide 721401 by 18.

Moving on to step 1:
18 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 18

Advancing to step 2:
When dividing 72 by 18, we get 4 with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 72 away from 72, we end up with 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 18

Let's proceed to step 3:
If we divide 1 by 18, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 40.0
Subtract 0 from 1 to get 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 18

Step 4:
The number 18 fits into 14 0 times, leaving a remainder of 14.
Put 0 as the next digit of the answer. 
Result so far: 400.0
If we take 0 away from 14, we end up with 14.
Append the next digit (0) from the dividend to 14 and continue with: 140 / 18

Going ahead to step 5:
18 can be fit into 140 7 times, resulting in a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 4007.0
If we subtract 126 from 140, we get 14.
Include the next digit (1) from the dividend after 14, then repeat: 141 / 18

Let's proceed to step 6:
When dividing 141 by 18, we get 7 with a remainder of 15.
Put 7 as the next digit of the answer. 
Result so far: 40077.0
If we take 126 away from 141, 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.

Let's proceed to step 7:
If we divide 150 by 18, we get 8 and a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 40077.8
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:
The number 18 fits into 60 3 times, leaving a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 40077.83
If we take 54 away from 60, we end up 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.

Going ahead to step 9:
The number 18 fits into 60 3 times, leaving a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 40077.833
If we take 54 away from 60, we end up 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.

Our division results in 40077.833 with a remaining 0.0006.