We look at the division of 284376 by 21 
We want to divide 284376 by 21.

Going ahead to step 1:
2 divided by 21 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 21

Let's proceed 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
If we subtract 21 from 28, we get 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 21

Step 3:
21 can be fit into 74 3 times, resulting in a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtract 63 from 74 to get 11.
Grab the next digit (3) from the dividend, add it to 11, then carry on: 113 / 21

Advancing to step 4:
21 can be fit into 113 5 times, resulting in a remainder of 8.
The next digit of our result is 5. 
Result so far: 135.0
If we subtract 105 from 113, we get 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 21

Moving on to step 5:
21 can be fit into 87 4 times, resulting in a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 1354.0
If we subtract 84 from 87, we get 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 21

Step 6:
36 divided by 21 is 1 with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 13541.0
Subtract 21 from 36 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
150 divided by 21 is 7 with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 13541.7
The remainder is 3 after subtracting 147 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 8:
21 can be fit into 30 1 times, resulting in a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 13541.71
If we take 21 away from 30, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 9:
The number 21 fits into 90 4 times, leaving a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 13541.714
Subtracting 84 from 90 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 10:
60 divided by 21 is 2 with a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 13541.7142
Subtracting 42 from 60 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 11:
The number 21 fits into 180 8 times, leaving a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 13541.71428
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 12:
When dividing 120 by 21, we get 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 13541.714285
Deduct 105 from 120 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 13:
21 can be fit into 150 7 times, resulting in a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 13541.7142857
Deduct 147 from 150 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 14:
The number 21 fits into 30 1 times, leaving a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 13541.71428571
Deduct 21 from 30 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

The quotient of the division is 13541.71428571, and the remainder is 9e-09.