We're dividing 268133 by 21 
Let's see how many times 21 fits into 268133.

Going ahead to step 1:
21 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 21

On to step 2:
The number 21 fits into 26 1 times, leaving a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 21 from 26 leaves us with 5.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 21

Step 3:
21 goes into 58 2 times with a remainder of 16.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
The remainder is 16 after subtracting 42 from 58.
Fetch the next digit (1) from the dividend, attach it to 16 and continue: 161 / 21

Step 4:
When dividing 161 by 21, we get 7 with a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 127.0
The remainder is 14 after subtracting 147 from 161.
Fetch the next digit (3) from the dividend, attach it to 14 and continue: 143 / 21

Let's proceed to step 5:
When dividing 143 by 21, we get 6 with a remainder of 17.
The number 6 becomes the next digit in our result. 
Result so far: 1276.0
If we take 126 away from 143, we end up with 17.
Bring next digit (3) of the dividend behind the 17 and repeat the process: 173 / 21

Advancing to step 6:
173 divided by 21 is 8 with a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 12768.0
If we take 168 away from 173, we end up 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.

Let's proceed to step 7:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 12768.2
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.

On to step 8:
If we divide 80 by 21, we get 3 and a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 12768.23
Deduct 63 from 80 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 9:
If we divide 170 by 21, we get 8 and a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 12768.238
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.

Advancing to step 10:
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: 12768.238
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 11:
If we divide 200 by 21, we get 9 and a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 12768.23809
The remainder is 11 after subtracting 189 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 12:
If we divide 110 by 21, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 12768.238095
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.

Let's proceed to step 13:
21 goes into 50 2 times with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 12768.2380952
The remainder is 8 after subtracting 42 from 50.
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 14:
When dividing 80 by 21, we get 3 with a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 12768.23809523
Subtracting 63 from 80 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The final outcome is 12768.23809523, with a leftover of 1.7e-08.