15458 divided by 12 
We're looking to find how many times 12 goes into 15458.

Let's proceed to step 1:
If we divide 1 by 12, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 12

Advancing to step 2:
The number 12 fits into 15 1 times, leaving a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 12 from 15, we get 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 12

Step 3:
34 divided by 12 is 2 with a remainder of 10.
The next digit of our result is 2. 
Result so far: 12.0
If we subtract 24 from 34, we get 10.
Bring next digit (5) of the dividend behind the 10 and repeat the process: 105 / 12

Advancing to step 4:
If we divide 105 by 12, we get 8 and a remainder of 9.
Write down 8 as next digit of the result. 
Result so far: 128.0
Deduct 96 from 105 and we're left with 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 12

Moving on to step 5:
98 divided by 12 is 8 with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 1288.0
The remainder is 2 after subtracting 96 from 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 6:
20 divided by 12 is 1 with a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 1288.1
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.

Advancing to step 7:
If we divide 80 by 12, we get 6 and a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 1288.16
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 8:
12 can be fit into 80 6 times, resulting in a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 1288.166
Subtracting 72 from 80 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.

The final result is 1288.166 with a remainder of 0.0008.