We look at the division of 123449 by 12 
Let's see how many times 12 fits into 123449.

Step 1:
1 divided by 12 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 12

Step 2:
12 can be fit into 12 1 times, resulting in a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 12 from 12 leaves us with 0.
Append the next digit (3) from the dividend to 0 and continue with: 3 / 12

Step 3:
The number 12 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtract 0 from 3 to get 3.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 12

Let's proceed to step 4:
If we divide 34 by 12, we get 2 and a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 102.0
Subtracting 24 from 34 leaves us with 10.
Take the next digit (4) from the dividend and append it to 10, then repeat: 104 / 12

On to step 5:
When dividing 104 by 12, we get 8 with a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 1028.0
The remainder is 8 after subtracting 96 from 104.
Append the next digit (9) from the dividend to 8 and continue with: 89 / 12

Moving on to step 6:
If we divide 89 by 12, we get 7 and a remainder of 5.
The next digit of our result is 7. 
Result so far: 10287.0
Deduct 84 from 89 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
When dividing 50 by 12, we get 4 with a remainder of 2.
The next digit of our result is 4. 
Result so far: 10287.4
Deduct 48 from 50 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 8:
When dividing 20 by 12, we get 1 with a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 10287.41
Subtracting 12 from 20 leaves us 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.

Let's proceed to step 9:
When dividing 80 by 12, we get 6 with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 10287.416
Deduct 72 from 80 and we're left 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.

Moving on to step 10:
12 goes into 80 6 times with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 10287.4166
If we subtract 72 from 80, we get 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 10287.4166, and the remainder is 8e-05.