We divide 289755 by 21
We're looking to find how many times 21 goes into 289755.

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
If we subtract 0 from 2, we get 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 21

Going ahead to step 2:
28 divided by 21 is 1 with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 7 after subtracting 21 from 28.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 21

Advancing to step 3:
79 divided by 21 is 3 with a remainder of 16.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we take 63 away from 79, we end up with 16.
Fetch the next digit (7) from the dividend, attach it to 16 and continue: 167 / 21

Let's proceed to step 4:
The number 21 fits into 167 7 times, leaving a remainder of 20.
The number 7 becomes the next digit in our result. 
Result so far: 137.0
If we subtract 147 from 167, we get 20.
Include the next digit (5) from the dividend after 20, then repeat: 205 / 21

Going ahead to step 5:
205 divided by 21 is 9 with a remainder of 16.
Use 9 as the next digit of our solution. 
Result so far: 1379.0
If we subtract 189 from 205, we get 16.
Append the next digit (5) from the dividend to 16 and continue with: 165 / 21

Step 6:
If we divide 165 by 21, we get 7 and a remainder of 18.
Use 7 as the next digit of our solution. 
Result so far: 13797.0
If we take 147 away from 165, we end up 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.

Advancing to step 7:
21 can be fit into 180 8 times, resulting in a remainder of 12.
The next digit of our result is 8. 
Result so far: 13797.8
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.

Advancing to step 8:
21 goes into 120 5 times with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 13797.85
Subtract 105 from 120 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.

On to step 9:
The number 21 fits into 150 7 times, leaving a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 13797.857
If we take 147 away from 150, we end up 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 10:
If we divide 30 by 21, we get 1 and a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 13797.8571
Subtract 21 from 30 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 11:
90 divided by 21 is 4 with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 13797.85714
Deduct 84 from 90 and we're left 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.

On to step 12:
The number 21 fits into 60 2 times, leaving a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 13797.857142
Subtract 42 from 60 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 13:
If we divide 180 by 21, we get 8 and a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 13797.8571428
Subtract 168 from 180 to 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.

Step 14:
21 goes into 120 5 times with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 13797.85714285
Subtracting 105 from 120 leaves us 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.

The final result is 13797.85714285 with a remainder of 1.5e-08.