We look at the division of 893690 by 21 
Let's see how many times 21 fits into 893690.

Moving on to step 1:
If we divide 8 by 21, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 21

Step 2:
If we divide 89 by 21, we get 4 and a remainder of 5.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtracting 84 from 89 leaves us with 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 21

Going ahead to step 3:
53 divided by 21 is 2 with a remainder of 11.
Use 2 as the next digit of our solution. 
Result so far: 42.0
Subtracting 42 from 53 leaves us with 11.
Fetch the next digit (6) from the dividend, attach it to 11 and continue: 116 / 21

Advancing to step 4:
21 can be fit into 116 5 times, resulting in a remainder of 11.
The number 5 becomes the next digit in our result. 
Result so far: 425.0
If we take 105 away from 116, we end up with 11.
Fetch the next digit (9) from the dividend, attach it to 11 and continue: 119 / 21

On to step 5:
The number 21 fits into 119 5 times, leaving a remainder of 14.
The number 5 becomes the next digit in our result. 
Result so far: 4255.0
If we subtract 105 from 119, we get 14.
Take the next digit (0) from the dividend and append it to 14, then repeat: 140 / 21

On to step 6:
If we divide 140 by 21, we get 6 and a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 42556.0
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.

Advancing to step 7:
The number 21 fits into 140 6 times, leaving a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 42556.6
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.

Advancing to step 8:
If we divide 140 by 21, we get 6 and a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 42556.66
The remainder is 14 after subtracting 126 from 140.
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 42556.66 with a remainder of 0.014.