299668 ÷ 21 
Our goal is to divide 299668 by 21.

Moving on to step 1:
If we divide 2 by 21, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 21

Going ahead to step 2:
The number 21 fits into 29 1 times, leaving a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 21 away from 29, we end up with 8.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 21

Going ahead to step 3:
21 goes into 89 4 times with a remainder of 5.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
The remainder is 5 after subtracting 84 from 89.
Grab the next digit (6) from the dividend, add it to 5, then carry on: 56 / 21

Advancing to step 4:
The number 21 fits into 56 2 times, leaving a remainder of 14.
Write down 2 as next digit of the result. 
Result so far: 142.0
Subtracting 42 from 56 leaves us with 14.
Fetch the next digit (6) from the dividend, attach it to 14 and continue: 146 / 21

On to step 5:
If we divide 146 by 21, we get 6 and a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 1426.0
Subtracting 126 from 146 leaves us with 20.
Fetch the next digit (8) from the dividend, attach it to 20 and continue: 208 / 21

Advancing to step 6:
21 can be fit into 208 9 times, resulting in a remainder of 19.
The number 9 becomes the next digit in our result. 
Result so far: 14269.0
Subtract 189 from 208 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 7:
The number 21 fits into 190 9 times, leaving a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 14269.9
Subtract 189 from 190 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 8:
10 divided by 21 is 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 14269.9
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 9:
When dividing 100 by 21, we get 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 14269.904
Deduct 84 from 100 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 10:
When dividing 160 by 21, we get 7 with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 14269.9047
Subtract 147 from 160 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 11:
The number 21 fits into 130 6 times, leaving a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 14269.90476
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 12:
21 can be fit into 40 1 times, resulting in a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 14269.904761
If we take 21 away from 40, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 13:
If we divide 190 by 21, we get 9 and a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 14269.9047619
Subtracting 189 from 190 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 14:
21 can be fit into 10 0 times, resulting in a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 14269.9047619
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 14269.9047619, with a leftover of 1e-08.