We divide 723989 by 66
We want to figure out the number of times 723989 can be divided by 66.

On to step 1:
The number 66 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
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 / 66

Step 2:
72 divided by 66 is 1 with a remainder of 6.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 66 from 72 leaves us with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 66

Advancing to step 3:
If we divide 63 by 66, we get 0 and a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 10.0
The remainder is 63 after subtracting 0 from 63.
Fetch the next digit (9) from the dividend, attach it to 63 and continue: 639 / 66

Let's proceed to step 4:
If we divide 639 by 66, we get 9 and a remainder of 45.
Use 9 as the next digit of our solution. 
Result so far: 109.0
Subtracting 594 from 639 leaves us with 45.
Take the next digit (8) from the dividend and append it to 45, then repeat: 458 / 66

Going ahead to step 5:
The number 66 fits into 458 6 times, leaving a remainder of 62.
Use 6 as the next digit of our solution. 
Result so far: 1096.0
If we take 396 away from 458, we end up with 62.
Grab the next digit (9) from the dividend, add it to 62, then carry on: 629 / 66

On to step 6:
The number 66 fits into 629 9 times, leaving a remainder of 35.
Record the quotient 9 as the next digit in the result. 
Result so far: 10969.0
If we take 594 away from 629, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 7:
If we divide 350 by 66, we get 5 and a remainder of 20.
The next digit of our result is 5. 
Result so far: 10969.5
If we subtract 330 from 350, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
When dividing 200 by 66, we get 3 with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 10969.53
If we subtract 198 from 200, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 9:
66 goes into 20 0 times with a remainder of 20.
The next digit of our result is 0. 
Result so far: 10969.53
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 10:
If we divide 200 by 66, we get 3 and a remainder of 2.
The next digit of our result is 3. 
Result so far: 10969.5303
Deduct 198 from 200 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 11:
The number 66 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 10969.5303
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 12:
If we divide 200 by 66, we get 3 and a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 10969.530303
If we subtract 198 from 200, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 13:
66 goes into 20 0 times with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 10969.530303
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 14:
The number 66 fits into 200 3 times, leaving a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 10969.53030303
Subtract 198 from 200 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 10969.53030303, with a leftover of 2e-09.