We look at the division of 686148 by 30 
The aim is to understand the frequency of 30 in 686148.

Moving on to step 1:
When dividing 6 by 30, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 30

Advancing to step 2:
When dividing 68 by 30, we get 2 with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 60 from 68, we get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 30

Step 3:
The number 30 fits into 86 2 times, leaving a remainder of 26.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
If we take 60 away from 86, we end up with 26.
Include the next digit (1) from the dividend after 26, then repeat: 261 / 30

Moving on to step 4:
261 divided by 30 is 8 with a remainder of 21.
Use 8 as the next digit of our solution. 
Result so far: 228.0
Subtract 240 from 261 to get 21.
Fetch the next digit (4) from the dividend, attach it to 21 and continue: 214 / 30

On to step 5:
214 divided by 30 is 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 2287.0
Subtract 210 from 214 to get 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 30

Advancing to step 6:
If we divide 48 by 30, we get 1 and a remainder of 18.
The next digit of our result is 1. 
Result so far: 22871.0
Deduct 30 from 48 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 7:
180 divided by 30 is 6 with a remainder of 0.
The next digit of our result is 6. 
Result so far: 22871.6
If we take 180 away from 180, we end up 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.

Let's proceed to step 8:
30 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 22871.6
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.

Advancing to step 9:
0 divided by 30 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 22871.6
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.

The quotient of the division is 22871.6, and the remainder is 0.0.