975012 ÷ 72 
The aim is to understand the frequency of 72 in 975012.

On to step 1:
9 divided by 72 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Take the next digit (7) from the dividend and append it to 9, then repeat: 97 / 72

On to step 2:
The number 72 fits into 97 1 times, leaving a remainder of 25.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 72 away from 97, we end up with 25.
Grab the next digit (5) from the dividend, add it to 25, then carry on: 255 / 72

Step 3:
When dividing 255 by 72, we get 3 with a remainder of 39.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtract 216 from 255 to get 39.
Fetch the next digit (0) from the dividend, attach it to 39 and continue: 390 / 72

Moving on to step 4:
390 divided by 72 is 5 with a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 135.0
If we subtract 360 from 390, we get 30.
Grab the next digit (1) from the dividend, add it to 30, then carry on: 301 / 72

Moving on to step 5:
When dividing 301 by 72, we get 4 with a remainder of 13.
Write down 4 as next digit of the result. 
Result so far: 1354.0
Deduct 288 from 301 and we're left with 13.
Grab the next digit (2) from the dividend, add it to 13, then carry on: 132 / 72

Let's proceed to step 6:
72 can be fit into 132 1 times, resulting in a remainder of 60.
Write down 1 as next digit of the result. 
Result so far: 13541.0
Subtract 72 from 132 to get 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 7:
72 can be fit into 600 8 times, resulting in a remainder of 24.
Write down 8 as next digit of the result. 
Result so far: 13541.8
The remainder is 24 after subtracting 576 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 8:
If we divide 240 by 72, we get 3 and a remainder of 24.
The next digit of our result is 3. 
Result so far: 13541.83
Deduct 216 from 240 and we're left 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.

Going ahead to step 9:
If we divide 240 by 72, we get 3 and a remainder of 24.
The number 3 becomes the next digit in our result. 
Result so far: 13541.833
If we subtract 216 from 240, we 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.

The final outcome is 13541.833, with a leftover of 0.0024.