344859 divided by 12 
Our goal is to divide 344859 by 12.

On to step 1:
3 divided by 12 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 12

Step 2:
12 can be fit into 34 2 times, resulting in a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 24 from 34 leaves us with 10.
Bring next digit (4) of the dividend behind the 10 and repeat the process: 104 / 12

Step 3:
104 divided by 12 is 8 with a remainder of 8.
Record the quotient 8 as the next digit in the result. 
Result so far: 28.0
The remainder is 8 after subtracting 96 from 104.
Grab the next digit (8) from the dividend, add it to 8, then carry on: 88 / 12

On to step 4:
If we divide 88 by 12, we get 7 and a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 287.0
Subtract 84 from 88 to get 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 12

Step 5:
If we divide 45 by 12, we get 3 and a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 2873.0
Subtract 36 from 45 to get 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 12

Let's proceed to step 6:
The number 12 fits into 99 8 times, leaving a remainder of 3.
The next digit of our result is 8. 
Result so far: 28738.0
The remainder is 3 after subtracting 96 from 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
The number 12 fits into 30 2 times, leaving a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 28738.2
The remainder is 6 after subtracting 24 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 8:
The number 12 fits into 60 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 28738.25
If we subtract 60 from 60, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
When dividing 0 by 12, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 28738.25
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
0 divided by 12 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 28738.25
Deduct 0 from 0 and we're left 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.

The final outcome is 28738.25, with a leftover of 0.0.