721054 ÷ 21 
We're looking to find how many times 21 goes into 721054.

Moving on to step 1:
When dividing 7 by 21, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 21

On to step 2:
If we divide 72 by 21, we get 3 and a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 63 away from 72, we end up with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 21

Advancing to step 3:
21 can be fit into 91 4 times, resulting in a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 34.0
The remainder is 7 after subtracting 84 from 91.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 21

Let's proceed to step 4:
21 can be fit into 70 3 times, resulting in a remainder of 7.
The next digit of our result is 3. 
Result so far: 343.0
Deduct 63 from 70 and we're left with 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 21

Advancing to step 5:
21 can be fit into 75 3 times, resulting in a remainder of 12.
The number 3 becomes the next digit in our result. 
Result so far: 3433.0
If we take 63 away from 75, we end up with 12.
Grab the next digit (4) from the dividend, add it to 12, then carry on: 124 / 21

Moving on to step 6:
The number 21 fits into 124 5 times, leaving a remainder of 19.
Write down 5 as next digit of the result. 
Result so far: 34335.0
If we subtract 105 from 124, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 7:
21 can be fit into 190 9 times, resulting in a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 34335.9
The remainder is 1 after subtracting 189 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 8:
10 divided by 21 is 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 34335.9
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
100 divided by 21 is 4 with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 34335.904
Deduct 84 from 100 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 10:
21 goes into 160 7 times with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 34335.9047
Subtract 147 from 160 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 11:
21 goes into 130 6 times with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 34335.90476
Subtract 126 from 130 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 12:
When dividing 40 by 21, we get 1 with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 34335.904761
If we subtract 21 from 40, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 13:
190 divided by 21 is 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 34335.9047619
Subtract 189 from 190 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 14:
10 divided by 21 is 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 34335.9047619
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 34335.9047619 with a balance of 1e-08.