We're dividing 267999 by 21 
We want to divide 267999 by 21.

On to step 1:
If we divide 2 by 21, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Append the next digit (6) from the dividend to 2 and continue with: 26 / 21

Moving on to step 2:
21 goes into 26 1 times with 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 (7) from the dividend after 5, then repeat: 57 / 21

Let's proceed to step 3:
21 goes into 57 2 times with a remainder of 15.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Deduct 42 from 57 and we're left with 15.
Grab the next digit (9) from the dividend, add it to 15, then carry on: 159 / 21

Advancing to step 4:
159 divided by 21 is 7 with a remainder of 12.
Put 7 as the next digit of the answer. 
Result so far: 127.0
The remainder is 12 after subtracting 147 from 159.
Bring next digit (9) of the dividend behind the 12 and repeat the process: 129 / 21

Moving on to step 5:
129 divided by 21 is 6 with a remainder of 3.
Use 6 as the next digit of our solution. 
Result so far: 1276.0
If we subtract 126 from 129, we get 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 21

Advancing to step 6:
The number 21 fits into 39 1 times, leaving a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 12761.0
If we take 21 away from 39, 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.

Let's proceed to step 7:
21 goes into 180 8 times with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 12761.8
Subtracting 168 from 180 leaves us with 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.
Put 5 as the next digit of the answer. 
Result so far: 12761.85
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:
150 divided by 21 is 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 12761.857
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.

Going ahead to step 10:
21 goes into 30 1 times with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 12761.8571
Subtracting 21 from 30 leaves us 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.

Going ahead to step 11:
90 divided by 21 is 4 with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 12761.85714
The remainder is 6 after subtracting 84 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 12:
21 goes into 60 2 times with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 12761.857142
The remainder is 18 after subtracting 42 from 60.
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:
180 divided by 21 is 8 with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 12761.8571428
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.

On to step 14:
120 divided by 21 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 12761.85714285
The remainder is 15 after subtracting 105 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

After the division, we end up with 12761.85714285 and a remainder of 1.5e-08.