We look at the division of 791961 by 72 
The aim is to understand the frequency of 72 in 791961.

Let's proceed to step 1:
The number 72 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 72

Moving on to step 2:
72 goes into 79 1 times with a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 72 from 79 and we're left with 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 72

Let's proceed to step 3:
72 goes into 71 0 times with a remainder of 71.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtract 0 from 71 to get 71.
Grab the next digit (9) from the dividend, add it to 71, then carry on: 719 / 72

Step 4:
The number 72 fits into 719 9 times, leaving a remainder of 71.
Record the quotient 9 as the next digit in the result. 
Result so far: 109.0
If we subtract 648 from 719, we get 71.
Append the next digit (6) from the dividend to 71 and continue with: 716 / 72

Step 5:
If we divide 716 by 72, we get 9 and a remainder of 68.
Write down 9 as next digit of the result. 
Result so far: 1099.0
Subtracting 648 from 716 leaves us with 68.
Append the next digit (1) from the dividend to 68 and continue with: 681 / 72

Let's proceed to step 6:
When dividing 681 by 72, we get 9 with a remainder of 33.
The next digit of our result is 9. 
Result so far: 10999.0
The remainder is 33 after subtracting 648 from 681.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 7:
If we divide 330 by 72, we get 4 and a remainder of 42.
Write down 4 as next digit of the result. 
Result so far: 10999.4
Deduct 288 from 330 and we're left 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.

Step 8:
If we divide 420 by 72, we get 5 and a remainder of 60.
The next digit of our result is 5. 
Result so far: 10999.45
The remainder is 60 after subtracting 360 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 9:
72 can be fit into 600 8 times, resulting in a remainder of 24.
The number 8 becomes the next digit in our result. 
Result so far: 10999.458
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.

Going ahead to step 10:
When dividing 240 by 72, we get 3 with a remainder of 24.
The next digit of our result is 3. 
Result so far: 10999.4583
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.

Advancing to step 11:
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: 10999.45833
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.

The final outcome is 10999.45833, with a leftover of 2.4e-05.