721439 ÷ 66 
Let's see how many times 66 fits into 721439.

Advancing to step 1:
7 divided by 66 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 66

Going ahead to step 2:
The number 66 fits into 72 1 times, leaving a remainder of 6.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 66 away from 72, we end up with 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 66

Moving on to step 3:
61 divided by 66 is 0 with a remainder of 61.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtract 0 from 61 to get 61.
Bring next digit (4) of the dividend behind the 61 and repeat the process: 614 / 66

Advancing to step 4:
66 can be fit into 614 9 times, resulting in a remainder of 20.
The number 9 becomes the next digit in our result. 
Result so far: 109.0
If we take 594 away from 614, we end up with 20.
Fetch the next digit (3) from the dividend, attach it to 20 and continue: 203 / 66

Advancing to step 5:
66 goes into 203 3 times with a remainder of 5.
The next digit of our result is 3. 
Result so far: 1093.0
Subtract 198 from 203 to get 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 66

Moving on to step 6:
59 divided by 66 is 0 with a remainder of 59.
The number 0 becomes the next digit in our result. 
Result so far: 10930.0
If we subtract 0 from 59, we get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 7:
The number 66 fits into 590 8 times, leaving a remainder of 62.
The number 8 becomes the next digit in our result. 
Result so far: 10930.8
If we subtract 528 from 590, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 8:
620 divided by 66 is 9 with a remainder of 26.
The next digit of our result is 9. 
Result so far: 10930.89
If we subtract 594 from 620, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 9:
260 divided by 66 is 3 with a remainder of 62.
The number 3 becomes the next digit in our result. 
Result so far: 10930.893
If we subtract 198 from 260, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 10:
66 goes into 620 9 times with a remainder of 26.
Put 9 as the next digit of the answer. 
Result so far: 10930.8939
If we take 594 away from 620, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 11:
66 goes into 260 3 times with a remainder of 62.
Record the quotient 3 as the next digit in the result. 
Result so far: 10930.89393
If we subtract 198 from 260, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 12:
When dividing 620 by 66, we get 9 with a remainder of 26.
The number 9 becomes the next digit in our result. 
Result so far: 10930.893939
The remainder is 26 after subtracting 594 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 13:
If we divide 260 by 66, we get 3 and a remainder of 62.
Put 3 as the next digit of the answer. 
Result so far: 10930.8939393
The remainder is 62 after subtracting 198 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 14:
66 can be fit into 620 9 times, resulting in a remainder of 26.
The number 9 becomes the next digit in our result. 
Result so far: 10930.89393939
If we take 594 away from 620, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

The final result is 10930.89393939 with a remainder of 2.6e-08.