We're dividing 889581 by 21 
We're looking to find how many times 21 goes into 889581.

Let's proceed to step 1:
21 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (8) of the dividend behind the 8 and repeat the process: 88 / 21

Step 2:
If we divide 88 by 21, we get 4 and a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 84 from 88 to get 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 21

Let's proceed to step 3:
The number 21 fits into 49 2 times, leaving a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 42.0
If we take 42 away from 49, we end up with 7.
Fetch the next digit (5) from the dividend, attach it to 7 and continue: 75 / 21

Step 4:
75 divided by 21 is 3 with a remainder of 12.
Put 3 as the next digit of the answer. 
Result so far: 423.0
If we subtract 63 from 75, we get 12.
Bring next digit (8) of the dividend behind the 12 and repeat the process: 128 / 21

On to step 5:
21 goes into 128 6 times with a remainder of 2.
The next digit of our result is 6. 
Result so far: 4236.0
Subtract 126 from 128 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 21

Step 6:
If we divide 21 by 21, we get 1 and a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 42361.0
Subtracting 21 from 21 leaves us 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:
When dividing 0 by 21, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 42361.0
Deduct 0 from 0 and we're left 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.

Step 8:
If we divide 0 by 21, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 42361.0
Subtracting 0 from 0 leaves us 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.

The quotient of the division is 42361.0, and the remainder is 0.0.