We're dividing 72455398 by 12 
We're looking to find how many times 12 goes into 72455398.

Step 1:
The number 12 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 12

Advancing to step 2:
12 goes into 72 6 times with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtracting 72 from 72 leaves us with 0.
Grab the next digit (4) from the dividend, add it to 0, then carry on: 4 / 12

Moving on to step 3:
The number 12 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 60.0
Subtract 0 from 4 to get 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 12

Step 4:
When dividing 45 by 12, we get 3 with a remainder of 9.
Write down 3 as next digit of the result. 
Result so far: 603.0
If we take 36 away from 45, we end up with 9.
Include the next digit (5) from the dividend after 9, then repeat: 95 / 12

Let's proceed to step 5:
12 goes into 95 7 times with a remainder of 11.
Write down 7 as next digit of the result. 
Result so far: 6037.0
Subtract 84 from 95 to get 11.
Bring next digit (3) of the dividend behind the 11 and repeat the process: 113 / 12

Moving on to step 6:
When dividing 113 by 12, we get 9 with a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 60379.0
Subtracting 108 from 113 leaves us with 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 12

Let's proceed to step 7:
If we divide 59 by 12, we get 4 and a remainder of 11.
Record the quotient 4 as the next digit in the result. 
Result so far: 603794.0
If we subtract 48 from 59, we get 11.
Append the next digit (8) from the dividend to 11 and continue with: 118 / 12

Going ahead to step 8:
12 can be fit into 118 9 times, resulting in a remainder of 10.
Record the quotient 9 as the next digit in the result. 
Result so far: 6037949.0
Deduct 108 from 118 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.

Advancing to step 9:
The number 12 fits into 100 8 times, leaving a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 6037949.8
The remainder is 4 after subtracting 96 from 100.
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:
40 divided by 12 is 3 with a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 6037949.83
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.

On to step 11:
40 divided by 12 is 3 with a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 6037949.833
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.

Our division results in 6037949.833 with a remaining 0.0004.