We look at the division of 673381 by 72 
The aim is to understand the frequency of 72 in 673381.

Moving on to step 1:
72 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (7) from the dividend, add it to 6, then carry on: 67 / 72

Going ahead to step 2:
The number 72 fits into 67 0 times, leaving a remainder of 67.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 67, we end up with 67.
Grab the next digit (3) from the dividend, add it to 67, then carry on: 673 / 72

Step 3:
673 divided by 72 is 9 with a remainder of 25.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we take 648 away from 673, we end up with 25.
Fetch the next digit (3) from the dividend, attach it to 25 and continue: 253 / 72

On to step 4:
72 goes into 253 3 times with a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 93.0
Deduct 216 from 253 and we're left with 37.
Grab the next digit (8) from the dividend, add it to 37, then carry on: 378 / 72

On to step 5:
378 divided by 72 is 5 with a remainder of 18.
Use 5 as the next digit of our solution. 
Result so far: 935.0
If we subtract 360 from 378, we get 18.
Take the next digit (1) from the dividend and append it to 18, then repeat: 181 / 72

Advancing to step 6:
The number 72 fits into 181 2 times, leaving a remainder of 37.
The number 2 becomes the next digit in our result. 
Result so far: 9352.0
If we take 144 away from 181, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 7:
If we divide 370 by 72, we get 5 and a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 9352.5
Subtracting 360 from 370 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
72 goes into 100 1 times with a remainder of 28.
The next digit of our result is 1. 
Result so far: 9352.51
If we take 72 away from 100, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 9:
72 goes into 280 3 times with a remainder of 64.
The number 3 becomes the next digit in our result. 
Result so far: 9352.513
If we subtract 216 from 280, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 10:
72 can be fit into 640 8 times, resulting in a remainder of 64.
Record the quotient 8 as the next digit in the result. 
Result so far: 9352.5138
Subtracting 576 from 640 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 11:
72 can be fit into 640 8 times, resulting in a remainder of 64.
The next digit of our result is 8. 
Result so far: 9352.51388
Subtracting 576 from 640 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final result is 9352.51388 with a remainder of 6.4e-05.