We're dividing 145072 by 12 
Our goal is to divide 145072 by 12.

On to step 1:
12 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 12

On to step 2:
When dividing 14 by 12, we get 1 with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 12 from 14, we get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 12

Going ahead to step 3:
When dividing 25 by 12, we get 2 with a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 12.0
The remainder is 1 after subtracting 24 from 25.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 12

Advancing to step 4:
If we divide 10 by 12, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 120.0
The remainder is 10 after subtracting 0 from 10.
Append the next digit (7) from the dividend to 10 and continue with: 107 / 12

Step 5:
107 divided by 12 is 8 with a remainder of 11.
The number 8 becomes the next digit in our result. 
Result so far: 1208.0
If we take 96 away from 107, we end up with 11.
Append the next digit (2) from the dividend to 11 and continue with: 112 / 12

Step 6:
When dividing 112 by 12, we get 9 with a remainder of 4.
Put 9 as the next digit of the answer. 
Result so far: 12089.0
If we subtract 108 from 112, we 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.

Step 7:
The number 12 fits into 40 3 times, leaving a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 12089.3
If we subtract 36 from 40, we 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.

Advancing to step 8:
12 goes into 40 3 times with a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 12089.33
Subtracting 36 from 40 leaves us 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.

After the division, we end up with 12089.33 and a remainder of 0.004.