We look at the division of 620086 by 30 
The aim is to understand the frequency of 30 in 620086.

Advancing to step 1:
6 divided by 30 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 30

On to step 2:
30 goes into 62 2 times with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 60 from 62 leaves us with 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 30

On to step 3:
20 divided by 30 is 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Subtract 0 from 20 to get 20.
Bring next digit (0) of the dividend behind the 20 and repeat the process: 200 / 30

On to step 4:
When dividing 200 by 30, we get 6 with a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 206.0
If we subtract 180 from 200, we get 20.
Include the next digit (8) from the dividend after 20, then repeat: 208 / 30

Let's proceed to step 5:
208 divided by 30 is 6 with a remainder of 28.
Put 6 as the next digit of the answer. 
Result so far: 2066.0
Subtracting 180 from 208 leaves us with 28.
Grab the next digit (6) from the dividend, add it to 28, then carry on: 286 / 30

On to step 6:
286 divided by 30 is 9 with a remainder of 16.
Put 9 as the next digit of the answer. 
Result so far: 20669.0
Subtracting 270 from 286 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 7:
The number 30 fits into 160 5 times, leaving a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 20669.5
Subtract 150 from 160 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.

Going ahead to step 8:
30 goes into 100 3 times with a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 20669.53
Deduct 90 from 100 and we're left 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.

On to step 9:
100 divided by 30 is 3 with a remainder of 10.
The next digit of our result is 3. 
Result so far: 20669.533
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 20669.533, and the remainder is 0.001.