900045 divided by 72 
The aim is to understand the frequency of 72 in 900045.

Going ahead to step 1:
When dividing 9 by 72, we get 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 72

Advancing to step 2:
90 divided by 72 is 1 with a remainder of 18.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 72 from 90, we get 18.
Include the next digit (0) from the dividend after 18, then repeat: 180 / 72

On to step 3:
72 can be fit into 180 2 times, resulting in a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Deduct 144 from 180 and we're left with 36.
Bring next digit (0) of the dividend behind the 36 and repeat the process: 360 / 72

On to step 4:
When dividing 360 by 72, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 125.0
The remainder is 0 after subtracting 360 from 360.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 72

Moving on to step 5:
The number 72 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 1250.0
If we take 0 away from 4, we end up with 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 72

Step 6:
The number 72 fits into 45 0 times, leaving a remainder of 45.
Put 0 as the next digit of the answer. 
Result so far: 12500.0
Subtracting 0 from 45 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 7:
72 can be fit into 450 6 times, resulting in a remainder of 18.
Put 6 as the next digit of the answer. 
Result so far: 12500.6
Subtract 432 from 450 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 8:
If we divide 180 by 72, we get 2 and a remainder of 36.
Write down 2 as next digit of the result. 
Result so far: 12500.62
If we subtract 144 from 180, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 9:
If we divide 360 by 72, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 12500.625
The remainder is 0 after subtracting 360 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
If we divide 0 by 72, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12500.625
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
When dividing 0 by 72, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 12500.625
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 12500.625 and a remainder of 0.0.