485790 divided by 30 
The aim is to understand the frequency of 30 in 485790.

Let's proceed to step 1:
30 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 30

Step 2:
If we divide 48 by 30, we get 1 and a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 30 from 48 to get 18.
Take the next digit (5) from the dividend and append it to 18, then repeat: 185 / 30

Step 3:
The number 30 fits into 185 6 times, leaving a remainder of 5.
Use 6 as the next digit of our solution. 
Result so far: 16.0
The remainder is 5 after subtracting 180 from 185.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 30

Moving on to step 4:
If we divide 57 by 30, we get 1 and a remainder of 27.
The next digit of our result is 1. 
Result so far: 161.0
Subtracting 30 from 57 leaves us with 27.
Take the next digit (9) from the dividend and append it to 27, then repeat: 279 / 30

Let's proceed to step 5:
30 goes into 279 9 times with a remainder of 9.
The next digit of our result is 9. 
Result so far: 1619.0
If we take 270 away from 279, we end up with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 30

Let's proceed to step 6:
The number 30 fits into 90 3 times, leaving a remainder of 0.
The next digit of our result is 3. 
Result so far: 16193.0
If we subtract 90 from 90, we 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.

Let's proceed to step 7:
30 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 16193.0
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.

Advancing to step 8:
30 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 16193.0
Subtract 0 from 0 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.

In conclusion, the division gives 16193.0 with a balance of 0.0.