We're dividing 263112 by 21 
We want to divide 263112 by 21.

Let's proceed to step 1:
When dividing 2 by 21, we get 0 with 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.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 21

Let's proceed to step 2:
If we divide 26 by 21, we get 1 and a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 21 from 26, we get 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 21

Let's proceed to step 3:
53 divided by 21 is 2 with a remainder of 11.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
The remainder is 11 after subtracting 42 from 53.
Fetch the next digit (1) from the dividend, attach it to 11 and continue: 111 / 21

Going ahead to step 4:
If we divide 111 by 21, we get 5 and a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 125.0
If we subtract 105 from 111, we get 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 21

On to step 5:
If we divide 61 by 21, we get 2 and a remainder of 19.
Write down 2 as next digit of the result. 
Result so far: 1252.0
Deduct 42 from 61 and we're left with 19.
Fetch the next digit (2) from the dividend, attach it to 19 and continue: 192 / 21

Going ahead to step 6:
192 divided by 21 is 9 with a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 12529.0
Subtracting 189 from 192 leaves us 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.

On to step 7:
21 goes into 30 1 times with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 12529.1
The remainder is 9 after subtracting 21 from 30.
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 8:
The number 21 fits into 90 4 times, leaving a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 12529.14
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.

Step 9:
60 divided by 21 is 2 with a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 12529.142
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.

Let's proceed to step 10:
21 can be fit into 180 8 times, resulting in a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 12529.1428
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.

Going ahead to step 11:
When dividing 120 by 21, we get 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 12529.14285
Deduct 105 from 120 and we're left 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.

Step 12:
21 can be fit into 150 7 times, resulting in a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 12529.142857
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 13:
21 goes into 30 1 times with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 12529.1428571
Deduct 21 from 30 and we're left 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.

Advancing to step 14:
90 divided by 21 is 4 with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 12529.14285714
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.

The final result is 12529.14285714 with a remainder of 6e-09.