We're dividing 72473328 by 409 
We want to figure out the number of times 72473328 can be divided by 409.

Moving on to step 1:
409 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 409

Step 2:
If we divide 72 by 409, we get 0 and a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 72 and we're left with 72.
Bring next digit (4) of the dividend behind the 72 and repeat the process: 724 / 409

Advancing to step 3:
724 divided by 409 is 1 with a remainder of 315.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 409 from 724 to get 315.
Append the next digit (7) from the dividend to 315 and continue with: 3157 / 409

Going ahead to step 4:
409 goes into 3157 7 times with a remainder of 294.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Subtract 2863 from 3157 to get 294.
Append the next digit (3) from the dividend to 294 and continue with: 2943 / 409

On to step 5:
If we divide 2943 by 409, we get 7 and a remainder of 80.
Write down 7 as next digit of the result. 
Result so far: 177.0
Subtracting 2863 from 2943 leaves us with 80.
Fetch the next digit (3) from the dividend, attach it to 80 and continue: 803 / 409

On to step 6:
409 goes into 803 1 times with a remainder of 394.
The next digit of our result is 1. 
Result so far: 1771.0
Subtract 409 from 803 to get 394.
Fetch the next digit (2) from the dividend, attach it to 394 and continue: 3942 / 409

On to step 7:
The number 409 fits into 3942 9 times, leaving a remainder of 261.
The number 9 becomes the next digit in our result. 
Result so far: 17719.0
Subtracting 3681 from 3942 leaves us with 261.
Include the next digit (8) from the dividend after 261, then repeat: 2618 / 409

Step 8:
2618 divided by 409 is 6 with a remainder of 164.
Put 6 as the next digit of the answer. 
Result so far: 177196.0
If we take 2454 away from 2618, we end up with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Going ahead to step 9:
409 goes into 1640 4 times with a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 177196.4
If we subtract 1636 from 1640, 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.

Let's proceed to step 10:
409 can be fit into 40 0 times, resulting in a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 177196.4
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 11:
400 divided by 409 is 0 with a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 177196.4
Subtract 0 from 400 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

After the division, we end up with 177196.4 and a remainder of 0.04.