21580049 divided by 729 
Let's see how many times 729 fits into 21580049.

Moving on to step 1:
If we divide 2 by 729, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 729

Step 2:
21 divided by 729 is 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Append the next digit (5) from the dividend to 21 and continue with: 215 / 729

Moving on to step 3:
When dividing 215 by 729, we get 0 with a remainder of 215.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 215 to get 215.
Take the next digit (8) from the dividend and append it to 215, then repeat: 2158 / 729

Let's proceed to step 4:
729 goes into 2158 2 times with a remainder of 700.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 1458 away from 2158, we end up with 700.
Fetch the next digit (0) from the dividend, attach it to 700 and continue: 7000 / 729

Advancing to step 5:
When dividing 7000 by 729, we get 9 with a remainder of 439.
Write down 9 as next digit of the result. 
Result so far: 29.0
If we subtract 6561 from 7000, we get 439.
Grab the next digit (0) from the dividend, add it to 439, then carry on: 4390 / 729

On to step 6:
729 can be fit into 4390 6 times, resulting in a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 296.0
Deduct 4374 from 4390 and we're left with 16.
Fetch the next digit (4) from the dividend, attach it to 16 and continue: 164 / 729

Moving on to step 7:
164 divided by 729 is 0 with a remainder of 164.
The next digit of our result is 0. 
Result so far: 2960.0
Subtracting 0 from 164 leaves us with 164.
Include the next digit (9) from the dividend after 164, then repeat: 1649 / 729

Let's proceed to step 8:
729 can be fit into 1649 2 times, resulting in a remainder of 191.
The number 2 becomes the next digit in our result. 
Result so far: 29602.0
If we subtract 1458 from 1649, we get 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Let's proceed to step 9:
1910 divided by 729 is 2 with a remainder of 452.
Use 2 as the next digit of our solution. 
Result so far: 29602.2
If we take 1458 away from 1910, we end up with 452.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4520, and continue the process.

Step 10:
729 can be fit into 4520 6 times, resulting in a remainder of 146.
Put 6 as the next digit of the answer. 
Result so far: 29602.26
Deduct 4374 from 4520 and we're left with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Moving on to step 11:
The number 729 fits into 1460 2 times, leaving a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 29602.262
Deduct 1458 from 1460 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.

Going ahead to step 12:
20 divided by 729 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 29602.262
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 13:
If we divide 200 by 729, we get 0 and a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 29602.262
Deduct 0 from 200 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Our division results in 29602.262 with a remaining 0.0002.