We look at the division of 158880 by 30 
The aim is to understand the frequency of 30 in 158880.

On to step 1:
If we divide 1 by 30, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 30

On to step 2:
30 goes into 15 0 times with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Bring next digit (8) of the dividend behind the 15 and repeat the process: 158 / 30

Advancing to step 3:
30 goes into 158 5 times with a remainder of 8.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we take 150 away from 158, we end up with 8.
Append the next digit (8) from the dividend to 8 and continue with: 88 / 30

On to step 4:
When dividing 88 by 30, we get 2 with a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 52.0
Subtracting 60 from 88 leaves us with 28.
Append the next digit (8) from the dividend to 28 and continue with: 288 / 30

Advancing to step 5:
30 goes into 288 9 times with a remainder of 18.
The number 9 becomes the next digit in our result. 
Result so far: 529.0
Deduct 270 from 288 and we're left with 18.
Bring next digit (0) of the dividend behind the 18 and repeat the process: 180 / 30

Going ahead to step 6:
30 goes into 180 6 times with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 5296.0
Deduct 180 from 180 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.

Moving on to step 7:
When dividing 0 by 30, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 5296.0
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.

Step 8:
When dividing 0 by 30, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 5296.0
If we subtract 0 from 0, 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.

After the division, we end up with 5296.0 and a remainder of 0.0.