939287 divided by 21 
We want to divide 939287 by 21.

Step 1:
21 can be fit into 9 0 times, resulting in a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Append the next digit (3) from the dividend to 9 and continue with: 93 / 21

Advancing to step 2:
If we divide 93 by 21, we get 4 and a remainder of 9.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 84 from 93 and we're left with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 21

On to step 3:
If we divide 99 by 21, we get 4 and a remainder of 15.
Write down 4 as next digit of the result. 
Result so far: 44.0
Subtracting 84 from 99 leaves us with 15.
Fetch the next digit (2) from the dividend, attach it to 15 and continue: 152 / 21

On to step 4:
21 can be fit into 152 7 times, resulting in a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 447.0
Deduct 147 from 152 and we're left with 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 21

Moving on to step 5:
When dividing 58 by 21, we get 2 with a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 4472.0
The remainder is 16 after subtracting 42 from 58.
Include the next digit (7) from the dividend after 16, then repeat: 167 / 21

Step 6:
When dividing 167 by 21, we get 7 with a remainder of 20.
Record the quotient 7 as the next digit in the result. 
Result so far: 44727.0
Subtract 147 from 167 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 7:
If we divide 200 by 21, we get 9 and a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 44727.9
If we subtract 189 from 200, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 8:
21 can be fit into 110 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 44727.95
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 9:
50 divided by 21 is 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 44727.952
If we take 42 away from 50, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
80 divided by 21 is 3 with a remainder of 17.
The next digit of our result is 3. 
Result so far: 44727.9523
If we subtract 63 from 80, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 11:
The number 21 fits into 170 8 times, leaving a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 44727.95238
Deduct 168 from 170 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 12:
21 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 44727.95238
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 13:
If we divide 200 by 21, we get 9 and a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 44727.9523809
If we take 189 away from 200, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 14:
21 goes into 110 5 times with a remainder of 5.
The next digit of our result is 5. 
Result so far: 44727.95238095
Subtract 105 from 110 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

After the division, we end up with 44727.95238095 and a remainder of 5e-09.