We look at the division of 673827 by 21 
Let's see how many times 21 fits into 673827.

Step 1:
6 divided by 21 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (7) from the dividend, attach it to 6 and continue: 67 / 21

Advancing to step 2:
21 can be fit into 67 3 times, resulting in a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 63 from 67, we get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 21

Moving on to step 3:
21 can be fit into 43 2 times, resulting in a remainder of 1.
The next digit of our result is 2. 
Result so far: 32.0
The remainder is 1 after subtracting 42 from 43.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 21

Advancing to step 4:
18 divided by 21 is 0 with a remainder of 18.
Write down 0 as next digit of the result. 
Result so far: 320.0
If we take 0 away from 18, we end up with 18.
Bring next digit (2) of the dividend behind the 18 and repeat the process: 182 / 21

Let's proceed to step 5:
21 goes into 182 8 times with a remainder of 14.
Use 8 as the next digit of our solution. 
Result so far: 3208.0
Deduct 168 from 182 and we're left with 14.
Fetch the next digit (7) from the dividend, attach it to 14 and continue: 147 / 21

Moving on to step 6:
When dividing 147 by 21, we get 7 with a remainder of 0.
The next digit of our result is 7. 
Result so far: 32087.0
If we subtract 147 from 147, we 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 7:
21 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 32087.0
If we take 0 away from 0, 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.

Let's proceed to step 8:
21 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 32087.0
If we subtract 0 from 0, we 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.

Our division results in 32087.0 with a remaining 0.0.