We're dividing 789451 by 30 
The aim is to understand the frequency of 30 in 789451.

Moving on to step 1:
The number 30 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 30

Let's proceed 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
If we subtract 60 from 78, we get 18.
Fetch the next digit (9) from the dividend, attach it to 18 and continue: 189 / 30

Step 3:
30 can be fit into 189 6 times, resulting in a remainder of 9.
The number 6 becomes the next digit in our result. 
Result so far: 26.0
If we take 180 away from 189, we end up with 9.
Include the next digit (4) from the dividend after 9, then repeat: 94 / 30

On to step 4:
30 goes into 94 3 times with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 263.0
Subtracting 90 from 94 leaves us with 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 30

Going ahead to step 5:
When dividing 45 by 30, we get 1 with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 2631.0
If we take 30 away from 45, we end up with 15.
Append the next digit (1) from the dividend to 15 and continue with: 151 / 30

Advancing to step 6:
If we divide 151 by 30, we get 5 and a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 26315.0
If we take 150 away from 151, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
The number 30 fits into 10 0 times, leaving a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 26315.0
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
When dividing 100 by 30, we get 3 with a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 26315.03
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
30 goes into 100 3 times with a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 26315.033
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 26315.033 and a remainder of 0.001.