We're dividing 14558734 by 12 
We want to figure out the number of times 14558734 can be divided by 12.

Step 1:
When dividing 1 by 12, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 12

Going ahead to step 2:
14 divided by 12 is 1 with a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 12 from 14, we get 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 12

On to step 3:
The number 12 fits into 25 2 times, leaving a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
The remainder is 1 after subtracting 24 from 25.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 12

Moving on to step 4:
If we divide 15 by 12, we get 1 and a remainder of 3.
The next digit of our result is 1. 
Result so far: 121.0
Subtract 12 from 15 to get 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 12

Let's proceed to step 5:
12 can be fit into 38 3 times, resulting in a remainder of 2.
The next digit of our result is 3. 
Result so far: 1213.0
Subtracting 36 from 38 leaves us with 2.
Append the next digit (7) from the dividend to 2 and continue with: 27 / 12

On to step 6:
12 can be fit into 27 2 times, resulting in a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 12132.0
Deduct 24 from 27 and we're left with 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 12

Step 7:
If we divide 33 by 12, we get 2 and a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 121322.0
Deduct 24 from 33 and we're left with 9.
Fetch the next digit (4) from the dividend, attach it to 9 and continue: 94 / 12

Step 8:
When dividing 94 by 12, we get 7 with a remainder of 10.
Put 7 as the next digit of the answer. 
Result so far: 1213227.0
Deduct 84 from 94 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
If we divide 100 by 12, we get 8 and a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 1213227.8
If we take 96 away from 100, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 10:
12 can be fit into 40 3 times, resulting in a remainder of 4.
The next digit of our result is 3. 
Result so far: 1213227.83
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 11:
12 can be fit into 40 3 times, resulting in a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 1213227.833
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 1213227.833 with a remaining 0.0004.