12015151 ÷ 72 
Our goal is to divide 12015151 by 72.

Step 1:
1 divided by 72 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 72

Let's proceed to step 2:
If we divide 12 by 72, we get 0 and a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Include the next digit (0) from the dividend after 12, then repeat: 120 / 72

Step 3:
72 can be fit into 120 1 times, resulting in a remainder of 48.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 72 away from 120, we end up with 48.
Bring next digit (1) of the dividend behind the 48 and repeat the process: 481 / 72

Going ahead to step 4:
If we divide 481 by 72, we get 6 and a remainder of 49.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Subtracting 432 from 481 leaves us with 49.
Append the next digit (5) from the dividend to 49 and continue with: 495 / 72

Let's proceed to step 5:
72 goes into 495 6 times with a remainder of 63.
Use 6 as the next digit of our solution. 
Result so far: 166.0
If we subtract 432 from 495, we get 63.
Bring next digit (1) of the dividend behind the 63 and repeat the process: 631 / 72

Moving on to step 6:
If we divide 631 by 72, we get 8 and a remainder of 55.
Write down 8 as next digit of the result. 
Result so far: 1668.0
The remainder is 55 after subtracting 576 from 631.
Include the next digit (5) from the dividend after 55, then repeat: 555 / 72

Let's proceed to step 7:
72 goes into 555 7 times with a remainder of 51.
Write down 7 as next digit of the result. 
Result so far: 16687.0
The remainder is 51 after subtracting 504 from 555.
Bring next digit (1) of the dividend behind the 51 and repeat the process: 511 / 72

Let's proceed to step 8:
If we divide 511 by 72, we get 7 and a remainder of 7.
Put 7 as the next digit of the answer. 
Result so far: 166877.0
If we subtract 504 from 511, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 9:
72 can be fit into 70 0 times, resulting in a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 166877.0
If we take 0 away from 70, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 10:
The number 72 fits into 700 9 times, leaving a remainder of 52.
Record the quotient 9 as the next digit in the result. 
Result so far: 166877.09
If we subtract 648 from 700, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 11:
72 can be fit into 520 7 times, resulting in a remainder of 16.
The next digit of our result is 7. 
Result so far: 166877.097
Subtracting 504 from 520 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 12:
72 can be fit into 160 2 times, resulting in a remainder of 16.
The next digit of our result is 2. 
Result so far: 166877.0972
If we subtract 144 from 160, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 13:
72 goes into 160 2 times with a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 166877.09722
If we subtract 144 from 160, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

After the division, we end up with 166877.09722 and a remainder of 1.6e-05.