786315 divided by 30 
The aim is to understand the frequency of 30 in 786315.

Step 1:
30 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 30

On to step 2:
The number 30 fits into 78 2 times, leaving a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 60 from 78 leaves us with 18.
Bring next digit (6) of the dividend behind the 18 and repeat the process: 186 / 30

Step 3:
If we divide 186 by 30, we get 6 and a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 26.0
If we take 180 away from 186, we end up with 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 30

Advancing to step 4:
63 divided by 30 is 2 with a remainder of 3.
Use 2 as the next digit of our solution. 
Result so far: 262.0
Deduct 60 from 63 and we're left with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 30

Moving on to step 5:
When dividing 31 by 30, we get 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 2621.0
The remainder is 1 after subtracting 30 from 31.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 30

Going ahead to step 6:
30 goes into 15 0 times with a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 26210.0
If we take 0 away from 15, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 7:
When dividing 150 by 30, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 26210.5
If we subtract 150 from 150, 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.

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: 26210.5
If we take 0 away from 0, 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.

Advancing to step 9:
The number 30 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 26210.5
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.

The quotient of the division is 26210.5, and the remainder is 0.0.