We're dividing 305507 by 72 
The aim is to understand the frequency of 72 in 305507.

Advancing to step 1:
When dividing 3 by 72, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 72

Going ahead to step 2:
The number 72 fits into 30 0 times, leaving a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 30 and we're left with 30.
Bring next digit (5) of the dividend behind the 30 and repeat the process: 305 / 72

Let's proceed to step 3:
72 can be fit into 305 4 times, resulting in a remainder of 17.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 288 from 305 leaves us with 17.
Append the next digit (5) from the dividend to 17 and continue with: 175 / 72

Going ahead to step 4:
If we divide 175 by 72, we get 2 and a remainder of 31.
Write down 2 as next digit of the result. 
Result so far: 42.0
Subtracting 144 from 175 leaves us with 31.
Include the next digit (0) from the dividend after 31, then repeat: 310 / 72

Advancing to step 5:
72 goes into 310 4 times with a remainder of 22.
The next digit of our result is 4. 
Result so far: 424.0
Subtract 288 from 310 to get 22.
Grab the next digit (7) from the dividend, add it to 22, then carry on: 227 / 72

On to step 6:
72 goes into 227 3 times with a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 4243.0
If we subtract 216 from 227, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 7:
If we divide 110 by 72, we get 1 and a remainder of 38.
Use 1 as the next digit of our solution. 
Result so far: 4243.1
If we take 72 away from 110, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 8:
380 divided by 72 is 5 with a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 4243.15
If we take 360 away from 380, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
200 divided by 72 is 2 with a remainder of 56.
Write down 2 as next digit of the result. 
Result so far: 4243.152
Deduct 144 from 200 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 10:
72 goes into 560 7 times with a remainder of 56.
Write down 7 as next digit of the result. 
Result so far: 4243.1527
Subtracting 504 from 560 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 11:
The number 72 fits into 560 7 times, leaving a remainder of 56.
The next digit of our result is 7. 
Result so far: 4243.15277
Deduct 504 from 560 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

In conclusion, the division gives 4243.15277 with a balance of 5.6e-05.