685731 divided by 30 
The aim is to understand the frequency of 30 in 685731.

Advancing to step 1:
30 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 30

Let's proceed to step 2:
If we divide 68 by 30, we get 2 and a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 60 from 68 and we're left with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 30

Let's proceed to step 3:
If we divide 85 by 30, we get 2 and a remainder of 25.
Write down 2 as next digit of the result. 
Result so far: 22.0
Subtracting 60 from 85 leaves us with 25.
Bring next digit (7) of the dividend behind the 25 and repeat the process: 257 / 30

Going ahead to step 4:
257 divided by 30 is 8 with a remainder of 17.
The next digit of our result is 8. 
Result so far: 228.0
Deduct 240 from 257 and we're left with 17.
Include the next digit (3) from the dividend after 17, then repeat: 173 / 30

Moving on to step 5:
The number 30 fits into 173 5 times, leaving a remainder of 23.
The number 5 becomes the next digit in our result. 
Result so far: 2285.0
The remainder is 23 after subtracting 150 from 173.
Fetch the next digit (1) from the dividend, attach it to 23 and continue: 231 / 30

Step 6:
231 divided by 30 is 7 with a remainder of 21.
Put 7 as the next digit of the answer. 
Result so far: 22857.0
If we subtract 210 from 231, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 7:
When dividing 210 by 30, we get 7 with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 22857.7
Deduct 210 from 210 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 8:
If we divide 0 by 30, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 22857.7
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
If we divide 0 by 30, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 22857.7
Subtract 0 from 0 to 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.

The quotient of the division is 22857.7, and the remainder is 0.0.