We look at the division of 261843 by 12 
We want to divide 261843 by 12.

Moving on to step 1:
12 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 12

Step 2:
12 can be fit into 26 2 times, resulting in a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 2 after subtracting 24 from 26.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 12

Advancing to step 3:
12 can be fit into 21 1 times, resulting in a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 21.0
Deduct 12 from 21 and we're left with 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 12

Advancing to step 4:
12 goes into 98 8 times with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 218.0
Subtract 96 from 98 to get 2.
Grab the next digit (4) from the dividend, add it to 2, then carry on: 24 / 12

Step 5:
When dividing 24 by 12, we get 2 with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 2182.0
If we take 24 away from 24, we end up with 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 12

Going ahead to step 6:
12 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 21820.0
Deduct 0 from 3 and we're left 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.

Going ahead to step 7:
30 divided by 12 is 2 with a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 21820.2
Subtracting 24 from 30 leaves us 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.

Moving on to step 8:
The number 12 fits into 60 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 21820.25
The remainder is 0 after subtracting 60 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
12 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 21820.25
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
The number 12 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 21820.25
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 21820.25 and a remainder of 0.0.