23718821 divided by 72 
The aim is to understand the frequency of 72 in 23718821.

Going ahead to step 1:
If we divide 2 by 72, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 72

On to step 2:
If we divide 23 by 72, we get 0 and a remainder of 23.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 23 to get 23.
Grab the next digit (7) from the dividend, add it to 23, then carry on: 237 / 72

Moving on to step 3:
72 can be fit into 237 3 times, resulting in a remainder of 21.
The next digit of our result is 3. 
Result so far: 3.0
Subtracting 216 from 237 leaves us with 21.
Bring next digit (1) of the dividend behind the 21 and repeat the process: 211 / 72

Going ahead to step 4:
The number 72 fits into 211 2 times, leaving a remainder of 67.
The next digit of our result is 2. 
Result so far: 32.0
Deduct 144 from 211 and we're left with 67.
Grab the next digit (8) from the dividend, add it to 67, then carry on: 678 / 72

On to step 5:
678 divided by 72 is 9 with a remainder of 30.
Use 9 as the next digit of our solution. 
Result so far: 329.0
Subtracting 648 from 678 leaves us with 30.
Include the next digit (8) from the dividend after 30, then repeat: 308 / 72

Going ahead to step 6:
72 goes into 308 4 times with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 3294.0
The remainder is 20 after subtracting 288 from 308.
Grab the next digit (2) from the dividend, add it to 20, then carry on: 202 / 72

Let's proceed to step 7:
72 goes into 202 2 times with a remainder of 58.
Write down 2 as next digit of the result. 
Result so far: 32942.0
Subtract 144 from 202 to get 58.
Append the next digit (1) from the dividend to 58 and continue with: 581 / 72

Advancing to step 8:
72 can be fit into 581 8 times, resulting in a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 329428.0
If we subtract 576 from 581, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 9:
50 divided by 72 is 0 with a remainder of 50.
The next digit of our result is 0. 
Result so far: 329428.0
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
The number 72 fits into 500 6 times, leaving a remainder of 68.
Put 6 as the next digit of the answer. 
Result so far: 329428.06
If we take 432 away from 500, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 11:
The number 72 fits into 680 9 times, leaving a remainder of 32.
The number 9 becomes the next digit in our result. 
Result so far: 329428.069
Deduct 648 from 680 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 12:
When dividing 320 by 72, we get 4 with a remainder of 32.
The number 4 becomes the next digit in our result. 
Result so far: 329428.0694
The remainder is 32 after subtracting 288 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 13:
72 goes into 320 4 times with a remainder of 32.
The next digit of our result is 4. 
Result so far: 329428.06944
If we take 288 away from 320, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

After the division, we end up with 329428.06944 and a remainder of 3.2e-05.