We look at the division of 72880415 by 404 
The aim is to understand the frequency of 404 in 72880415.

Step 1:
If we divide 7 by 404, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 404

Going ahead to step 2:
404 goes into 72 0 times with a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Append the next digit (8) from the dividend to 72 and continue with: 728 / 404

Going ahead to step 3:
404 can be fit into 728 1 times, resulting in a remainder of 324.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 404 from 728, we get 324.
Take the next digit (8) from the dividend and append it to 324, then repeat: 3248 / 404

Going ahead to step 4:
3248 divided by 404 is 8 with a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 18.0
Deduct 3232 from 3248 and we're left with 16.
Take the next digit (0) from the dividend and append it to 16, then repeat: 160 / 404

Step 5:
404 can be fit into 160 0 times, resulting in a remainder of 160.
Write down 0 as next digit of the result. 
Result so far: 180.0
If we take 0 away from 160, we end up with 160.
Fetch the next digit (4) from the dividend, attach it to 160 and continue: 1604 / 404

Step 6:
404 can be fit into 1604 3 times, resulting in a remainder of 392.
The next digit of our result is 3. 
Result so far: 1803.0
If we take 1212 away from 1604, we end up with 392.
Take the next digit (1) from the dividend and append it to 392, then repeat: 3921 / 404

Moving on to step 7:
The number 404 fits into 3921 9 times, leaving a remainder of 285.
Use 9 as the next digit of our solution. 
Result so far: 18039.0
Subtracting 3636 from 3921 leaves us with 285.
Fetch the next digit (5) from the dividend, attach it to 285 and continue: 2855 / 404

Advancing to step 8:
If we divide 2855 by 404, we get 7 and a remainder of 27.
The number 7 becomes the next digit in our result. 
Result so far: 180397.0
Subtract 2828 from 2855 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 9:
404 goes into 270 0 times with a remainder of 270.
Record the quotient 0 as the next digit in the result. 
Result so far: 180397.0
Subtracting 0 from 270 leaves us with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Advancing to step 10:
404 goes into 2700 6 times with a remainder of 276.
The next digit of our result is 6. 
Result so far: 180397.06
Subtract 2424 from 2700 to get 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Moving on to step 11:
404 can be fit into 2760 6 times, resulting in a remainder of 336.
Record the quotient 6 as the next digit in the result. 
Result so far: 180397.066
If we take 2424 away from 2760, we end up with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

The quotient of the division is 180397.066, and the remainder is 0.0336.