Let's divide 809858 by 30
The aim is to understand the frequency of 30 in 809858.

Going ahead to step 1:
8 divided by 30 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 30

On to step 2:
80 divided by 30 is 2 with a remainder of 20.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 60 from 80 to get 20.
Append the next digit (9) from the dividend to 20 and continue with: 209 / 30

Step 3:
If we divide 209 by 30, we get 6 and a remainder of 29.
The next digit of our result is 6. 
Result so far: 26.0
If we subtract 180 from 209, we get 29.
Append the next digit (8) from the dividend to 29 and continue with: 298 / 30

Moving on to step 4:
30 can be fit into 298 9 times, resulting in a remainder of 28.
Put 9 as the next digit of the answer. 
Result so far: 269.0
Deduct 270 from 298 and we're left with 28.
Grab the next digit (5) from the dividend, add it to 28, then carry on: 285 / 30

Moving on to step 5:
285 divided by 30 is 9 with a remainder of 15.
Write down 9 as next digit of the result. 
Result so far: 2699.0
Deduct 270 from 285 and we're left with 15.
Fetch the next digit (8) from the dividend, attach it to 15 and continue: 158 / 30

On to step 6:
When dividing 158 by 30, we get 5 with a remainder of 8.
The number 5 becomes the next digit in our result. 
Result so far: 26995.0
If we subtract 150 from 158, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
30 can be fit into 80 2 times, resulting in a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 26995.2
The remainder is 20 after subtracting 60 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 8:
200 divided by 30 is 6 with a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 26995.26
If we take 180 away from 200, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
30 goes into 200 6 times with a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 26995.266
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 26995.266 and a remainder of 0.002.