725273 divided by 21 
We want to divide 725273 by 21.

Step 1:
When dividing 7 by 21, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 21

On to step 2:
When dividing 72 by 21, we get 3 with a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 9 after subtracting 63 from 72.
Fetch the next digit (5) from the dividend, attach it to 9 and continue: 95 / 21

Let's proceed to step 3:
95 divided by 21 is 4 with a remainder of 11.
Write down 4 as next digit of the result. 
Result so far: 34.0
Subtract 84 from 95 to get 11.
Bring next digit (2) of the dividend behind the 11 and repeat the process: 112 / 21

Let's proceed to step 4:
The number 21 fits into 112 5 times, leaving a remainder of 7.
The next digit of our result is 5. 
Result so far: 345.0
If we take 105 away from 112, we end up with 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 21

Going ahead to step 5:
21 goes into 77 3 times with a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 3453.0
Subtracting 63 from 77 leaves us with 14.
Bring next digit (3) of the dividend behind the 14 and repeat the process: 143 / 21

Step 6:
The number 21 fits into 143 6 times, leaving a remainder of 17.
The next digit of our result is 6. 
Result so far: 34536.0
Subtracting 126 from 143 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 7:
The number 21 fits into 170 8 times, leaving a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 34536.8
Deduct 168 from 170 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.

Let's proceed to step 8:
When dividing 20 by 21, we get 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 34536.8
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
21 goes into 200 9 times with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 34536.809
If we subtract 189 from 200, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 10:
If we divide 110 by 21, we get 5 and a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 34536.8095
If we subtract 105 from 110, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 11:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 34536.80952
Subtract 42 from 50 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 12:
The number 21 fits into 80 3 times, leaving a remainder of 17.
The next digit of our result is 3. 
Result so far: 34536.809523
Deduct 63 from 80 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 13:
The number 21 fits into 170 8 times, leaving a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 34536.8095238
Subtracting 168 from 170 leaves us 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.

Advancing to step 14:
If we divide 20 by 21, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 34536.8095238
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.

After the division, we end up with 34536.8095238 and a remainder of 2e-08.