Let's divide 75315 by 72
The aim is to understand the frequency of 72 in 75315.

On to step 1:
7 divided by 72 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 72

Moving on to step 2:
When dividing 75 by 72, we get 1 with a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 72 from 75 to get 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 72

Advancing to step 3:
72 can be fit into 33 0 times, resulting in a remainder of 33.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we subtract 0 from 33, we get 33.
Take the next digit (1) from the dividend and append it to 33, then repeat: 331 / 72

Let's proceed to step 4:
If we divide 331 by 72, we get 4 and a remainder of 43.
Use 4 as the next digit of our solution. 
Result so far: 104.0
If we take 288 away from 331, we end up with 43.
Take the next digit (5) from the dividend and append it to 43, then repeat: 435 / 72

Let's proceed to step 5:
When dividing 435 by 72, we get 6 with a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 1046.0
The remainder is 3 after subtracting 432 from 435.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 6:
If we divide 30 by 72, we get 0 and a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 1046.0
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 7:
300 divided by 72 is 4 with a remainder of 12.
The next digit of our result is 4. 
Result so far: 1046.04
If we take 288 away from 300, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 8:
If we divide 120 by 72, we get 1 and a remainder of 48.
The number 1 becomes the next digit in our result. 
Result so far: 1046.041
Subtract 72 from 120 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 9:
If we divide 480 by 72, we get 6 and a remainder of 48.
Use 6 as the next digit of our solution. 
Result so far: 1046.0416
Deduct 432 from 480 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 10:
72 can be fit into 480 6 times, resulting in a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 1046.04166
Subtracting 432 from 480 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

After the division, we end up with 1046.04166 and a remainder of 4.8e-05.