13123992 ÷ 12 
We want to divide 13123992 by 12.

Step 1:
1 divided by 12 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 12

Going ahead to step 2:
12 goes into 13 1 times with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 12 from 13, we get 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 12

Going ahead to step 3:
12 goes into 11 0 times with a remainder of 11.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we take 0 away from 11, we end up with 11.
Grab the next digit (2) from the dividend, add it to 11, then carry on: 112 / 12

Let's proceed to step 4:
12 goes into 112 9 times with a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 109.0
If we subtract 108 from 112, we get 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 12

Moving on to step 5:
12 can be fit into 43 3 times, resulting in a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 1093.0
Deduct 36 from 43 and we're left with 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 12

Step 6:
If we divide 79 by 12, we get 6 and a remainder of 7.
Record the quotient 6 as the next digit in the result. 
Result so far: 10936.0
Subtracting 72 from 79 leaves us with 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 12

On to step 7:
12 goes into 79 6 times with a remainder of 7.
Put 6 as the next digit of the answer. 
Result so far: 109366.0
Subtracting 72 from 79 leaves us with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 12

On to step 8:
72 divided by 12 is 6 with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 1093666.0
Deduct 72 from 72 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.

On to step 9:
If we divide 0 by 12, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1093666.0
Subtract 0 from 0 to 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:
When dividing 0 by 12, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1093666.0
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 result is 1093666.0 with a remainder of 0.0.