80021304 divided by 729 
We want to figure out the number of times 80021304 can be divided by 729.

Step 1:
729 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 729

Advancing to step 2:
The number 729 fits into 80 0 times, leaving a remainder of 80.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Take the next digit (0) from the dividend and append it to 80, then repeat: 800 / 729

On to step 3:
The number 729 fits into 800 1 times, leaving a remainder of 71.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 729 from 800 leaves us with 71.
Grab the next digit (2) from the dividend, add it to 71, then carry on: 712 / 729

Moving on to step 4:
If we divide 712 by 729, we get 0 and a remainder of 712.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we subtract 0 from 712, we get 712.
Take the next digit (1) from the dividend and append it to 712, then repeat: 7121 / 729

Going ahead to step 5:
729 goes into 7121 9 times with a remainder of 560.
The next digit of our result is 9. 
Result so far: 109.0
Subtract 6561 from 7121 to get 560.
Fetch the next digit (3) from the dividend, attach it to 560 and continue: 5603 / 729

Let's proceed to step 6:
When dividing 5603 by 729, we get 7 with a remainder of 500.
Record the quotient 7 as the next digit in the result. 
Result so far: 1097.0
The remainder is 500 after subtracting 5103 from 5603.
Include the next digit (0) from the dividend after 500, then repeat: 5000 / 729

Step 7:
5000 divided by 729 is 6 with a remainder of 626.
Record the quotient 6 as the next digit in the result. 
Result so far: 10976.0
Subtract 4374 from 5000 to get 626.
Grab the next digit (4) from the dividend, add it to 626, then carry on: 6264 / 729

Advancing to step 8:
If we divide 6264 by 729, we get 8 and a remainder of 432.
The next digit of our result is 8. 
Result so far: 109768.0
Subtracting 5832 from 6264 leaves us with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

On to step 9:
4320 divided by 729 is 5 with a remainder of 675.
Record the quotient 5 as the next digit in the result. 
Result so far: 109768.5
The remainder is 675 after subtracting 3645 from 4320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

Moving on to step 10:
729 goes into 6750 9 times with a remainder of 189.
Record the quotient 9 as the next digit in the result. 
Result so far: 109768.59
Subtract 6561 from 6750 to get 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Moving on to step 11:
The number 729 fits into 1890 2 times, leaving a remainder of 432.
The next digit of our result is 2. 
Result so far: 109768.592
Subtracting 1458 from 1890 leaves us with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Going ahead to step 12:
The number 729 fits into 4320 5 times, leaving a remainder of 675.
The number 5 becomes the next digit in our result. 
Result so far: 109768.5925
If we take 3645 away from 4320, we end up with 675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

Step 13:
When dividing 6750 by 729, we get 9 with a remainder of 189.
Put 9 as the next digit of the answer. 
Result so far: 109768.59259
The remainder is 189 after subtracting 6561 from 6750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Step 14:
1890 divided by 729 is 2 with a remainder of 432.
Use 2 as the next digit of our solution. 
Result so far: 109768.592592
Subtract 1458 from 1890 to get 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Advancing to step 15:
The number 729 fits into 4320 5 times, leaving a remainder of 675.
Write down 5 as next digit of the result. 
Result so far: 109768.5925925
Subtract 3645 from 4320 to get 675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

Going ahead to step 16:
If we divide 6750 by 729, we get 9 and a remainder of 189.
Write down 9 as next digit of the result. 
Result so far: 109768.59259259
Deduct 6561 from 6750 and we're left with 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

The final outcome is 109768.59259259, with a leftover of 1.89e-07.