457265 divided by 21 
We want to divide 457265 by 21.

On to step 1:
If we divide 4 by 21, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 21

Advancing to step 2:
45 divided by 21 is 2 with a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 42 away from 45, we end up with 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 21

Advancing to step 3:
21 goes into 37 1 times with a remainder of 16.
Use 1 as the next digit of our solution. 
Result so far: 21.0
Subtract 21 from 37 to get 16.
Append the next digit (2) from the dividend to 16 and continue with: 162 / 21

Step 4:
If we divide 162 by 21, we get 7 and a remainder of 15.
Record the quotient 7 as the next digit in the result. 
Result so far: 217.0
Subtracting 147 from 162 leaves us with 15.
Append the next digit (6) from the dividend to 15 and continue with: 156 / 21

Advancing to step 5:
21 goes into 156 7 times with a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 2177.0
If we subtract 147 from 156, we get 9.
Take the next digit (5) from the dividend and append it to 9, then repeat: 95 / 21

Going ahead to step 6:
95 divided by 21 is 4 with a remainder of 11.
Record the quotient 4 as the next digit in the result. 
Result so far: 21774.0
If we subtract 84 from 95, 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.

Moving on to step 7:
The number 21 fits into 110 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 21774.5
Subtracting 105 from 110 leaves us with 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 8:
50 divided by 21 is 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 21774.52
Deduct 42 from 50 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 9:
21 can be fit into 80 3 times, resulting in a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 21774.523
If we subtract 63 from 80, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 10:
21 goes into 170 8 times with a remainder of 2.
The next digit of our result is 8. 
Result so far: 21774.5238
Subtract 168 from 170 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.

Let's proceed to step 11:
21 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 21774.5238
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.

Step 12:
200 divided by 21 is 9 with a remainder of 11.
The next digit of our result is 9. 
Result so far: 21774.523809
The remainder is 11 after subtracting 189 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 13:
110 divided by 21 is 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 21774.5238095
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.

Advancing to step 14:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 21774.52380952
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 21774.52380952 with a remaining 8e-09.