658266 divided by 21 
We want to divide 658266 by 21.

Moving on to step 1:
6 divided by 21 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 21

Let's proceed to step 2:
If we divide 65 by 21, we get 3 and a remainder of 2.
The next digit of our result is 3. 
Result so far: 3.0
Subtracting 63 from 65 leaves us with 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 21

Let's proceed to step 3:
The number 21 fits into 28 1 times, leaving a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 31.0
If we subtract 21 from 28, we get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 21

Let's proceed to step 4:
The number 21 fits into 72 3 times, leaving a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 313.0
If we take 63 away from 72, we end up with 9.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 21

Advancing to step 5:
21 can be fit into 96 4 times, resulting in a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 3134.0
If we subtract 84 from 96, we get 12.
Bring next digit (6) of the dividend behind the 12 and repeat the process: 126 / 21

Moving on to step 6:
If we divide 126 by 21, we get 6 and a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 31346.0
If we take 126 away from 126, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 7:
If we divide 0 by 21, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 31346.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
21 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 31346.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 31346.0 with a remainder of 0.0.