Let's divide 665544 by 30
The aim is to understand the frequency of 30 in 665544.

Step 1:
If we divide 6 by 30, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 30

On to step 2:
30 can be fit into 66 2 times, resulting in a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 6 after subtracting 60 from 66.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 30

Moving on to step 3:
30 goes into 65 2 times with a remainder of 5.
The next digit of our result is 2. 
Result so far: 22.0
Deduct 60 from 65 and we're left with 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 30

Going ahead to step 4:
The number 30 fits into 55 1 times, leaving a remainder of 25.
Write down 1 as next digit of the result. 
Result so far: 221.0
Deduct 30 from 55 and we're left with 25.
Fetch the next digit (4) from the dividend, attach it to 25 and continue: 254 / 30

Advancing to step 5:
If we divide 254 by 30, we get 8 and a remainder of 14.
The next digit of our result is 8. 
Result so far: 2218.0
If we take 240 away from 254, we end up with 14.
Fetch the next digit (4) from the dividend, attach it to 14 and continue: 144 / 30

Advancing to step 6:
144 divided by 30 is 4 with a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 22184.0
Subtracting 120 from 144 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 7:
If we divide 240 by 30, we get 8 and a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 22184.8
Subtracting 240 from 240 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.

Step 8:
30 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 22184.8
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.

On to step 9:
0 divided by 30 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 22184.8
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 22184.8 and a remainder of 0.0.