We look at the division of 26873 by 21 
We want to divide 26873 by 21.

Advancing to step 1:
When dividing 2 by 21, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 21

Let's proceed to step 2:
The number 21 fits into 26 1 times, leaving a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 5 after subtracting 21 from 26.
Fetch the next digit (8) from the dividend, attach it to 5 and continue: 58 / 21

On to step 3:
58 divided by 21 is 2 with a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we subtract 42 from 58, we get 16.
Grab the next digit (7) from the dividend, add it to 16, then carry on: 167 / 21

Let's proceed to step 4:
The number 21 fits into 167 7 times, leaving a remainder of 20.
The next digit of our result is 7. 
Result so far: 127.0
Deduct 147 from 167 and we're left with 20.
Append the next digit (3) from the dividend to 20 and continue with: 203 / 21

Advancing to step 5:
If we divide 203 by 21, we get 9 and a remainder of 14.
Use 9 as the next digit of our solution. 
Result so far: 1279.0
The remainder is 14 after subtracting 189 from 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 6:
If we divide 140 by 21, we get 6 and a remainder of 14.
The next digit of our result is 6. 
Result so far: 1279.6
Deduct 126 from 140 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 7:
When dividing 140 by 21, we get 6 with a remainder of 14.
The next digit of our result is 6. 
Result so far: 1279.66
Subtract 126 from 140 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final result is 1279.66 with a remainder of 0.014.