Let's divide 223640 by 72
The aim is to understand the frequency of 72 in 223640.

Moving on to step 1:
When dividing 2 by 72, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 72

Going ahead to step 2:
72 goes into 22 0 times with a remainder of 22.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 22 and we're left with 22.
Bring next digit (3) of the dividend behind the 22 and repeat the process: 223 / 72

Let's proceed to step 3:
223 divided by 72 is 3 with a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 7 after subtracting 216 from 223.
Append the next digit (6) from the dividend to 7 and continue with: 76 / 72

Step 4:
72 can be fit into 76 1 times, resulting in a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 31.0
Deduct 72 from 76 and we're left with 4.
Grab the next digit (4) from the dividend, add it to 4, then carry on: 44 / 72

On to step 5:
72 can be fit into 44 0 times, resulting in a remainder of 44.
Record the quotient 0 as the next digit in the result. 
Result so far: 310.0
If we subtract 0 from 44, we get 44.
Take the next digit (0) from the dividend and append it to 44, then repeat: 440 / 72

On to step 6:
The number 72 fits into 440 6 times, leaving a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 3106.0
If we subtract 432 from 440, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
The number 72 fits into 80 1 times, leaving a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 3106.1
If we subtract 72 from 80, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 8:
80 divided by 72 is 1 with a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 3106.11
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 3106.11 with a remainder of 0.008.