259400 ÷ 12 
Let's see how many times 12 fits into 259400.

Advancing to step 1:
12 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
If we subtract 0 from 2, we get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 12

Moving on to step 2:
The number 12 fits into 25 2 times, leaving a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 24 from 25 and we're left with 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 12

Moving on to step 3:
12 can be fit into 19 1 times, resulting in a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 21.0
The remainder is 7 after subtracting 12 from 19.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 12

Going ahead to step 4:
12 goes into 74 6 times with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 216.0
The remainder is 2 after subtracting 72 from 74.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 12

Moving on to step 5:
The number 12 fits into 20 1 times, leaving a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 2161.0
Deduct 12 from 20 and we're left with 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 12

Moving on to step 6:
The number 12 fits into 80 6 times, leaving a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 21616.0
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 7:
12 can be fit into 80 6 times, resulting in a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 21616.6
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 8:
The number 12 fits into 80 6 times, leaving a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 21616.66
If we take 72 away from 80, we end up 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.

The quotient of the division is 21616.66, and the remainder is 0.008.