We look at the division of 282971 by 21 
Let's see how many times 21 fits into 282971.

Moving on to step 1:
The number 21 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 21

Advancing to step 2:
The number 21 fits into 28 1 times, leaving a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 21 from 28 and we're left with 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 21

Step 3:
If we divide 72 by 21, we get 3 and a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
The remainder is 9 after subtracting 63 from 72.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 21

On to step 4:
99 divided by 21 is 4 with a remainder of 15.
Record the quotient 4 as the next digit in the result. 
Result so far: 134.0
If we subtract 84 from 99, we get 15.
Grab the next digit (7) from the dividend, add it to 15, then carry on: 157 / 21

Advancing to step 5:
The number 21 fits into 157 7 times, leaving a remainder of 10.
The number 7 becomes the next digit in our result. 
Result so far: 1347.0
The remainder is 10 after subtracting 147 from 157.
Take the next digit (1) from the dividend and append it to 10, then repeat: 101 / 21

Moving on to step 6:
21 can be fit into 101 4 times, resulting in a remainder of 17.
Write down 4 as next digit of the result. 
Result so far: 13474.0
Subtract 84 from 101 to 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.

Moving on to step 7:
21 goes into 170 8 times with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 13474.8
Subtract 168 from 170 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
If we divide 20 by 21, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 13474.8
Subtract 0 from 20 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.

Going ahead to step 9:
200 divided by 21 is 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 13474.809
Subtract 189 from 200 to 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.

On to step 10:
21 can be fit into 110 5 times, resulting in a remainder of 5.
The next digit of our result is 5. 
Result so far: 13474.8095
If we subtract 105 from 110, we 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.

Let's proceed to step 11:
The number 21 fits into 50 2 times, leaving a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 13474.80952
Deduct 42 from 50 and we're left 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.

On to step 12:
When dividing 80 by 21, we get 3 with a remainder of 17.
The next digit of our result is 3. 
Result so far: 13474.809523
The remainder is 17 after subtracting 63 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 13:
If we divide 170 by 21, we get 8 and a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 13474.8095238
If we subtract 168 from 170, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 14:
21 goes into 20 0 times with a remainder of 20.
The next digit of our result is 0. 
Result so far: 13474.8095238
If we subtract 0 from 20, we 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.

Our division results in 13474.8095238 with a remaining 2e-08.