We look at the division of 723903 by 30 
The aim is to understand the frequency of 30 in 723903.

Moving on to step 1:
The number 30 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 30

Step 2:
30 can be fit into 72 2 times, resulting in a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 60 from 72 to get 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 30

Let's proceed to step 3:
The number 30 fits into 123 4 times, leaving a remainder of 3.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
The remainder is 3 after subtracting 120 from 123.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 30

Going ahead to step 4:
30 goes into 39 1 times with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 241.0
Subtract 30 from 39 to get 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 30

Moving on to step 5:
30 goes into 90 3 times with a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 2413.0
If we take 90 away from 90, we end up with 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 30

Going ahead to step 6:
When dividing 3 by 30, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 24130.0
If we subtract 0 from 3, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 7:
30 can be fit into 30 1 times, resulting in a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 24130.1
Subtract 30 from 30 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
When dividing 0 by 30, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 24130.1
Subtracting 0 from 0 leaves us 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.

Going ahead to step 9:
The number 30 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 24130.1
Subtracting 0 from 0 leaves us 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.

After the division, we end up with 24130.1 and a remainder of 0.0.