721290 ÷ 12 
Our goal is to divide 721290 by 12.

Advancing to step 1:
7 divided by 12 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 12

Step 2:
When dividing 72 by 12, we get 6 with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 6.0
The remainder is 0 after subtracting 72 from 72.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 12

Let's proceed to step 3:
When dividing 1 by 12, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 60.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 12

Let's proceed to step 4:
12 can be fit into 12 1 times, resulting in a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 601.0
The remainder is 0 after subtracting 12 from 12.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 12

Step 5:
The number 12 fits into 9 0 times, leaving a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 6010.0
The remainder is 9 after subtracting 0 from 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 12

Advancing to step 6:
The number 12 fits into 90 7 times, leaving a remainder of 6.
Write down 7 as next digit of the result. 
Result so far: 60107.0
If we subtract 84 from 90, we 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.

On to step 7:
The number 12 fits into 60 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 60107.5
If we take 60 away from 60, we end up 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.

On to step 8:
When dividing 0 by 12, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 60107.5
If we subtract 0 from 0, 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.

Step 9:
When dividing 0 by 12, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 60107.5
If we take 0 away from 0, we end up 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.

The final outcome is 60107.5, with a leftover of 0.0.