We divide 486781 by 30
The aim is to understand the frequency of 30 in 486781.

Let's proceed to step 1:
30 goes into 4 0 times with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 30

Step 2:
The number 30 fits into 48 1 times, leaving a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 30 from 48, we get 18.
Fetch the next digit (6) from the dividend, attach it to 18 and continue: 186 / 30

Going ahead to step 3:
The number 30 fits into 186 6 times, leaving a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 16.0
The remainder is 6 after subtracting 180 from 186.
Fetch the next digit (7) from the dividend, attach it to 6 and continue: 67 / 30

Moving on to step 4:
30 can be fit into 67 2 times, resulting in a remainder of 7.
Record the quotient 2 as the next digit in the result. 
Result so far: 162.0
Subtract 60 from 67 to get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 30

Step 5:
30 goes into 78 2 times with a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 1622.0
Subtracting 60 from 78 leaves us with 18.
Append the next digit (1) from the dividend to 18 and continue with: 181 / 30

Advancing to step 6:
30 goes into 181 6 times with a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 16226.0
Deduct 180 from 181 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
If we divide 10 by 30, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 16226.0
Subtracting 0 from 10 leaves us 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.

Going ahead to step 8:
If we divide 100 by 30, we get 3 and a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 16226.03
If we subtract 90 from 100, we 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.

Advancing to step 9:
30 goes into 100 3 times with a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 16226.033
Subtracting 90 from 100 leaves us 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.

The final outcome is 16226.033, with a leftover of 0.001.