We're dividing 721226 by 16 
We want to figure out the number of times 721226 can be divided by 16.

Step 1:
The number 16 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 16

Moving on to step 2:
16 goes into 72 4 times with a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 64 from 72 leaves us with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 16

Let's proceed to step 3:
16 goes into 81 5 times with a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 45.0
If we subtract 80 from 81, we get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 16

On to step 4:
When dividing 12 by 16, we get 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 450.0
Subtracting 0 from 12 leaves us with 12.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 16

Step 5:
When dividing 122 by 16, we get 7 with a remainder of 10.
The number 7 becomes the next digit in our result. 
Result so far: 4507.0
If we subtract 112 from 122, we get 10.
Take the next digit (6) from the dividend and append it to 10, then repeat: 106 / 16

Advancing to step 6:
The number 16 fits into 106 6 times, leaving a remainder of 10.
The next digit of our result is 6. 
Result so far: 45076.0
If we take 96 away from 106, 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.

Step 7:
16 goes into 100 6 times with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 45076.6
If we subtract 96 from 100, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 8:
16 can be fit into 40 2 times, resulting in a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 45076.62
The remainder is 8 after subtracting 32 from 40.
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 9:
16 goes into 80 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 45076.625
The remainder is 0 after subtracting 80 from 80.
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 10:
If we divide 0 by 16, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 45076.625
Subtract 0 from 0 to 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.

Going ahead to step 11:
16 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 45076.625
Subtract 0 from 0 to 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.

The final outcome is 45076.625, with a leftover of 0.0.