We're dividing 562290 by 72 
The aim is to understand the frequency of 72 in 562290.

Advancing to step 1:
5 divided by 72 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (6) of the dividend behind the 5 and repeat the process: 56 / 72

Moving on to step 2:
The number 72 fits into 56 0 times, leaving a remainder of 56.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 56 leaves us with 56.
Grab the next digit (2) from the dividend, add it to 56, then carry on: 562 / 72

Moving on to step 3:
The number 72 fits into 562 7 times, leaving a remainder of 58.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 504 from 562 leaves us with 58.
Append the next digit (2) from the dividend to 58 and continue with: 582 / 72

On to step 4:
582 divided by 72 is 8 with a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 78.0
Deduct 576 from 582 and we're left with 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 72

Let's proceed to step 5:
The number 72 fits into 69 0 times, leaving a remainder of 69.
Write down 0 as next digit of the result. 
Result so far: 780.0
If we subtract 0 from 69, we get 69.
Grab the next digit (0) from the dividend, add it to 69, then carry on: 690 / 72

Step 6:
72 goes into 690 9 times with a remainder of 42.
The next digit of our result is 9. 
Result so far: 7809.0
If we take 648 away from 690, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 7:
72 goes into 420 5 times with a remainder of 60.
The number 5 becomes the next digit in our result. 
Result so far: 7809.5
If we subtract 360 from 420, we 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.

Moving on to step 8:
When dividing 600 by 72, we get 8 with a remainder of 24.
Record the quotient 8 as the next digit in the result. 
Result so far: 7809.58
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.

Advancing to step 9:
If we divide 240 by 72, we get 3 and a remainder of 24.
Record the quotient 3 as the next digit in the result. 
Result so far: 7809.583
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.

Going ahead to step 10:
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: 7809.5833
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.

After the division, we end up with 7809.5833 and a remainder of 0.00024.