We're dividing 899648 by 72 
The aim is to understand the frequency of 72 in 899648.

Let's proceed to step 1:
When dividing 8 by 72, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 72

Advancing to step 2:
89 divided by 72 is 1 with a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 72 away from 89, we end up with 17.
Append the next digit (9) from the dividend to 17 and continue with: 179 / 72

Step 3:
72 goes into 179 2 times with a remainder of 35.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtracting 144 from 179 leaves us with 35.
Include the next digit (6) from the dividend after 35, then repeat: 356 / 72

On to step 4:
72 can be fit into 356 4 times, resulting in a remainder of 68.
Put 4 as the next digit of the answer. 
Result so far: 124.0
The remainder is 68 after subtracting 288 from 356.
Grab the next digit (4) from the dividend, add it to 68, then carry on: 684 / 72

Let's proceed to step 5:
684 divided by 72 is 9 with a remainder of 36.
Record the quotient 9 as the next digit in the result. 
Result so far: 1249.0
If we take 648 away from 684, we end up with 36.
Fetch the next digit (8) from the dividend, attach it to 36 and continue: 368 / 72

Moving on to step 6:
72 goes into 368 5 times with a remainder of 8.
Put 5 as the next digit of the answer. 
Result so far: 12495.0
Subtracting 360 from 368 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 7:
80 divided by 72 is 1 with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 12495.1
The remainder is 8 after subtracting 72 from 80.
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 8:
72 can be fit into 80 1 times, resulting in a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 12495.11
Subtracting 72 from 80 leaves us with 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 outcome is 12495.11, with a leftover of 0.008.