Let's divide 280277 by 21
We're looking to find how many times 21 goes into 280277.

Advancing to step 1:
The number 21 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 21

Going ahead to step 2:
If we divide 28 by 21, we get 1 and a remainder of 7.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 21 from 28, we get 7.
Take the next digit (0) from the dividend and append it to 7, then repeat: 70 / 21

Step 3:
When dividing 70 by 21, we get 3 with a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Deduct 63 from 70 and we're left with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 21

On to step 4:
21 goes into 72 3 times with a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 133.0
Deduct 63 from 72 and we're left with 9.
Include the next digit (7) from the dividend after 9, then repeat: 97 / 21

Let's proceed to step 5:
The number 21 fits into 97 4 times, leaving a remainder of 13.
Use 4 as the next digit of our solution. 
Result so far: 1334.0
Deduct 84 from 97 and we're left with 13.
Include the next digit (7) from the dividend after 13, then repeat: 137 / 21

Advancing to step 6:
When dividing 137 by 21, we get 6 with a remainder of 11.
The next digit of our result is 6. 
Result so far: 13346.0
If we take 126 away from 137, 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.

Let's proceed to step 7:
If we divide 110 by 21, we get 5 and a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 13346.5
Deduct 105 from 110 and we're left 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.

Step 8:
The number 21 fits into 50 2 times, leaving a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 13346.52
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.

Step 9:
When dividing 80 by 21, we get 3 with a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 13346.523
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.

Going ahead to step 10:
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: 13346.5238
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.

Let's proceed to step 11:
When dividing 20 by 21, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 13346.5238
If we take 0 away from 20, we end up with 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 12:
21 can be fit into 200 9 times, resulting in a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 13346.523809
Subtracting 189 from 200 leaves us 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.

Going ahead to step 13:
When dividing 110 by 21, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 13346.5238095
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.

Let's proceed to step 14:
The number 21 fits into 50 2 times, leaving a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 13346.52380952
Subtracting 42 from 50 leaves us 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.

In conclusion, the division gives 13346.52380952 with a balance of 8e-09.