665770 ÷ 72 
The aim is to understand the frequency of 72 in 665770.

Moving on to step 1:
The number 72 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 72

Moving on to step 2:
72 goes into 66 0 times with a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Include the next digit (5) from the dividend after 66, then repeat: 665 / 72

Moving on to step 3:
72 can be fit into 665 9 times, resulting in a remainder of 17.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 648 from 665 to get 17.
Fetch the next digit (7) from the dividend, attach it to 17 and continue: 177 / 72

Let's proceed to step 4:
If we divide 177 by 72, we get 2 and a remainder of 33.
The number 2 becomes the next digit in our result. 
Result so far: 92.0
Subtracting 144 from 177 leaves us with 33.
Grab the next digit (7) from the dividend, add it to 33, then carry on: 337 / 72

Advancing to step 5:
If we divide 337 by 72, we get 4 and a remainder of 49.
Use 4 as the next digit of our solution. 
Result so far: 924.0
The remainder is 49 after subtracting 288 from 337.
Grab the next digit (0) from the dividend, add it to 49, then carry on: 490 / 72

On to step 6:
If we divide 490 by 72, we get 6 and a remainder of 58.
The number 6 becomes the next digit in our result. 
Result so far: 9246.0
If we take 432 away from 490, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 7:
If we divide 580 by 72, we get 8 and a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 9246.8
If we subtract 576 from 580, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 8:
If we divide 40 by 72, we get 0 and a remainder of 40.
The next digit of our result is 0. 
Result so far: 9246.8
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 9:
400 divided by 72 is 5 with a remainder of 40.
The next digit of our result is 5. 
Result so far: 9246.805
The remainder is 40 after subtracting 360 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 10:
72 goes into 400 5 times with a remainder of 40.
Use 5 as the next digit of our solution. 
Result so far: 9246.8055
The remainder is 40 after subtracting 360 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 9246.8055 with a remainder of 0.0004.