We look at the division of 355779 by 30 
The aim is to understand the frequency of 30 in 355779.

Going ahead to step 1:
3 divided by 30 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 30

Step 2:
30 can be fit into 35 1 times, resulting in a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 30 from 35 leaves us with 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 30

On to step 3:
55 divided by 30 is 1 with a remainder of 25.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtract 30 from 55 to get 25.
Include the next digit (7) from the dividend after 25, then repeat: 257 / 30

On to step 4:
When dividing 257 by 30, we get 8 with a remainder of 17.
The number 8 becomes the next digit in our result. 
Result so far: 118.0
Subtracting 240 from 257 leaves us with 17.
Take the next digit (7) from the dividend and append it to 17, then repeat: 177 / 30

Step 5:
If we divide 177 by 30, we get 5 and a remainder of 27.
The next digit of our result is 5. 
Result so far: 1185.0
The remainder is 27 after subtracting 150 from 177.
Fetch the next digit (9) from the dividend, attach it to 27 and continue: 279 / 30

Going ahead to step 6:
When dividing 279 by 30, we get 9 with a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 11859.0
The remainder is 9 after subtracting 270 from 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
30 goes into 90 3 times with a remainder of 0.
The next digit of our result is 3. 
Result so far: 11859.3
The remainder is 0 after subtracting 90 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
30 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 11859.3
Deduct 0 from 0 and we're left 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.

On to step 9:
0 divided by 30 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 11859.3
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 11859.3 and a remainder of 0.0.