721390 ÷ 2 
Let's see how many times 2 fits into 721390.

Advancing to step 1:
The number 2 fits into 7 3 times, leaving a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 6 from 7 and we're left with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 2

On to step 2:
2 goes into 12 6 times with a remainder of 0.
The next digit of our result is 6. 
Result so far: 36.0
Subtracting 12 from 12 leaves us with 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 2

Moving on to step 3:
1 divided by 2 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 360.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 2

On to step 4:
2 goes into 13 6 times with a remainder of 1.
The next digit of our result is 6. 
Result so far: 3606.0
If we subtract 12 from 13, we get 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 2

Going ahead to step 5:
The number 2 fits into 19 9 times, leaving a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 36069.0
Subtract 18 from 19 to get 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 2

On to step 6:
10 divided by 2 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 360695.0
If we subtract 10 from 10, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 7:
The number 2 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 360695.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
2 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 360695.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 360695.0 with a balance of 0.0.