We look at the division of 235086 by 72 
The aim is to understand the frequency of 72 in 235086.

Step 1:
72 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 72

Step 2:
72 can be fit into 23 0 times, resulting in a remainder of 23.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 23 to get 23.
Grab the next digit (5) from the dividend, add it to 23, then carry on: 235 / 72

Step 3:
If we divide 235 by 72, we get 3 and a remainder of 19.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 216 from 235 and we're left with 19.
Take the next digit (0) from the dividend and append it to 19, then repeat: 190 / 72

Moving on to step 4:
When dividing 190 by 72, we get 2 with a remainder of 46.
The number 2 becomes the next digit in our result. 
Result so far: 32.0
The remainder is 46 after subtracting 144 from 190.
Fetch the next digit (8) from the dividend, attach it to 46 and continue: 468 / 72

On to step 5:
When dividing 468 by 72, we get 6 with a remainder of 36.
The number 6 becomes the next digit in our result. 
Result so far: 326.0
Subtract 432 from 468 to get 36.
Append the next digit (6) from the dividend to 36 and continue with: 366 / 72

Step 6:
366 divided by 72 is 5 with a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 3265.0
Subtract 360 from 366 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 7:
72 can be fit into 60 0 times, resulting in a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 3265.0
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 8:
The number 72 fits into 600 8 times, leaving a remainder of 24.
The number 8 becomes the next digit in our result. 
Result so far: 3265.08
Subtract 576 from 600 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 9:
72 can be fit into 240 3 times, resulting in a remainder of 24.
Use 3 as the next digit of our solution. 
Result so far: 3265.083
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.

Advancing to step 10:
240 divided by 72 is 3 with a remainder of 24.
The number 3 becomes the next digit in our result. 
Result so far: 3265.0833
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.

The quotient of the division is 3265.0833, and the remainder is 0.00024.