We divide 43091520 by 72
The aim is to understand the frequency of 72 in 43091520.

Step 1:
4 divided by 72 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 72

Step 2:
72 goes into 43 0 times with a remainder of 43.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 43 leaves us with 43.
Append the next digit (0) from the dividend to 43 and continue with: 430 / 72

Step 3:
When dividing 430 by 72, we get 5 with a remainder of 70.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtracting 360 from 430 leaves us with 70.
Include the next digit (9) from the dividend after 70, then repeat: 709 / 72

Advancing to step 4:
The number 72 fits into 709 9 times, leaving a remainder of 61.
The next digit of our result is 9. 
Result so far: 59.0
The remainder is 61 after subtracting 648 from 709.
Bring next digit (1) of the dividend behind the 61 and repeat the process: 611 / 72

Step 5:
72 can be fit into 611 8 times, resulting in a remainder of 35.
Put 8 as the next digit of the answer. 
Result so far: 598.0
Subtract 576 from 611 to get 35.
Grab the next digit (5) from the dividend, add it to 35, then carry on: 355 / 72

Going ahead to step 6:
When dividing 355 by 72, we get 4 with a remainder of 67.
The next digit of our result is 4. 
Result so far: 5984.0
If we take 288 away from 355, we end up with 67.
Grab the next digit (2) from the dividend, add it to 67, then carry on: 672 / 72

Let's proceed to step 7:
72 goes into 672 9 times with a remainder of 24.
Record the quotient 9 as the next digit in the result. 
Result so far: 59849.0
Subtract 648 from 672 to get 24.
Bring next digit (0) of the dividend behind the 24 and repeat the process: 240 / 72

On to step 8:
72 can be fit into 240 3 times, resulting in a remainder of 24.
Record the quotient 3 as the next digit in the result. 
Result so far: 598493.0
If we take 216 away from 240, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 9:
240 divided by 72 is 3 with a remainder of 24.
The number 3 becomes the next digit in our result. 
Result so far: 598493.3
The remainder is 24 after subtracting 216 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 10:
If we divide 240 by 72, we get 3 and a remainder of 24.
Use 3 as the next digit of our solution. 
Result so far: 598493.33
The remainder is 24 after subtracting 216 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final outcome is 598493.33, with a leftover of 0.024.