721638 divided by 11 
Let's see how many times 11 fits into 721638.

Let's proceed to step 1:
The number 11 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 11

Let's proceed to step 2:
If we divide 72 by 11, we get 6 and a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 66 from 72, we get 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 11

Moving on to step 3:
11 can be fit into 61 5 times, resulting in a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 65.0
Subtracting 55 from 61 leaves us with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 11

Step 4:
The number 11 fits into 66 6 times, leaving a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 656.0
Subtract 66 from 66 to get 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 11

On to step 5:
If we divide 3 by 11, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 6560.0
If we subtract 0 from 3, we get 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 11

Moving on to step 6:
11 can be fit into 38 3 times, resulting in a remainder of 5.
The next digit of our result is 3. 
Result so far: 65603.0
Subtracting 33 from 38 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
The number 11 fits into 50 4 times, leaving a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 65603.4
If we subtract 44 from 50, 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.

Going ahead to step 8:
When dividing 60 by 11, we get 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 65603.45
The remainder is 5 after subtracting 55 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 9:
If we divide 50 by 11, we get 4 and a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 65603.454
If we subtract 44 from 50, 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.

Let's proceed to step 10:
The number 11 fits into 60 5 times, leaving a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 65603.4545
Subtracting 55 from 60 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 11:
11 can be fit into 50 4 times, resulting in a remainder of 6.
The next digit of our result is 4. 
Result so far: 65603.45454
The remainder is 6 after subtracting 44 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 12:
If we divide 60 by 11, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 65603.454545
If we subtract 55 from 60, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 13:
When dividing 50 by 11, we get 4 with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 65603.4545454
The remainder is 6 after subtracting 44 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 14:
If we divide 60 by 11, we get 5 and a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 65603.45454545
If we subtract 55 from 60, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

After the division, we end up with 65603.45454545 and a remainder of 5e-09.