Let's divide 51904 by 30
The aim is to understand the frequency of 30 in 51904.

Moving on to step 1:
If we divide 5 by 30, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 30

Moving on to step 2:
30 goes into 51 1 times with a remainder of 21.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 30 from 51, we get 21.
Take the next digit (9) from the dividend and append it to 21, then repeat: 219 / 30

Moving on to step 3:
219 divided by 30 is 7 with a remainder of 9.
Put 7 as the next digit of the answer. 
Result so far: 17.0
If we take 210 away from 219, we end up with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 30

Let's proceed to step 4:
30 goes into 90 3 times with a remainder of 0.
The next digit of our result is 3. 
Result so far: 173.0
If we take 90 away from 90, we end up with 0.
Append the next digit (4) from the dividend to 0 and continue with: 4 / 30

Advancing to step 5:
The number 30 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 1730.0
The remainder is 4 after subtracting 0 from 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 6:
30 can be fit into 40 1 times, resulting in a remainder of 10.
The next digit of our result is 1. 
Result so far: 1730.1
If we subtract 30 from 40, 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.

Let's proceed to step 7:
30 goes into 100 3 times with a remainder of 10.
The next digit of our result is 3. 
Result so far: 1730.13
If we take 90 away from 100, 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:
If we divide 100 by 30, we get 3 and a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 1730.133
Subtract 90 from 100 to 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.

The final outcome is 1730.133, with a leftover of 0.001.