We look at the division of 723607 by 30 
The aim is to understand the frequency of 30 in 723607.

On to step 1:
30 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 30

Advancing to step 2:
72 divided by 30 is 2 with a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 12 after subtracting 60 from 72.
Append the next digit (3) from the dividend to 12 and continue with: 123 / 30

Advancing to step 3:
30 can be fit into 123 4 times, resulting in a remainder of 3.
Write down 4 as next digit of the result. 
Result so far: 24.0
If we subtract 120 from 123, we get 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 30

Moving on to step 4:
If we divide 36 by 30, we get 1 and a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 241.0
Subtract 30 from 36 to get 6.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 30

Going ahead to step 5:
If we divide 60 by 30, we get 2 and a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 2412.0
If we take 60 away from 60, we end up with 0.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 30

Step 6:
If we divide 7 by 30, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 24120.0
Deduct 0 from 7 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 7:
70 divided by 30 is 2 with a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 24120.2
The remainder is 10 after subtracting 60 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
If we divide 100 by 30, we get 3 and a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 24120.23
If we take 90 away from 100, we end up 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.

Advancing to step 9:
100 divided by 30 is 3 with a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 24120.233
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The quotient of the division is 24120.233, and the remainder is 0.001.