104103 ÷ 12 
Let's see how many times 12 fits into 104103.

Moving on to step 1:
When dividing 1 by 12, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 12

Moving on to step 2:
When dividing 10 by 12, we get 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 10 to get 10.
Take the next digit (4) from the dividend and append it to 10, then repeat: 104 / 12

Advancing to step 3:
The number 12 fits into 104 8 times, leaving a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 96 from 104 and we're left with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 12

On to step 4:
The number 12 fits into 81 6 times, leaving a remainder of 9.
Write down 6 as next digit of the result. 
Result so far: 86.0
Subtract 72 from 81 to get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 12

Advancing to step 5:
The number 12 fits into 90 7 times, leaving a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 867.0
Subtracting 84 from 90 leaves us with 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 12

Advancing to step 6:
12 can be fit into 63 5 times, resulting in a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 8675.0
If we subtract 60 from 63, we 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.

Advancing to step 7:
12 can be fit into 30 2 times, resulting in a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 8675.2
If we take 24 away from 30, we end up 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.

Step 8:
The number 12 fits into 60 5 times, leaving a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 8675.25
Deduct 60 from 60 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.

Step 9:
12 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 8675.25
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.

Going ahead to step 10:
12 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 8675.25
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 8675.25 and a remainder of 0.0.