Let's divide 278375 by 3
The aim is to understand the frequency of 3 in 278375.

Advancing to step 1:
3 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (7) from the dividend after 2, then repeat: 27 / 3

Let's proceed to step 2:
3 goes into 27 9 times with a remainder of 0.
The next digit of our result is 9. 
Result so far: 9.0
If we take 27 away from 27, we end up with 0.
Fetch the next digit (8) from the dividend, attach it to 0 and continue: 8 / 3

On to step 3:
8 divided by 3 is 2 with a remainder of 2.
The next digit of our result is 2. 
Result so far: 92.0
The remainder is 2 after subtracting 6 from 8.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 3

Moving on to step 4:
3 can be fit into 23 7 times, resulting in a remainder of 2.
The number 7 becomes the next digit in our result. 
Result so far: 927.0
The remainder is 2 after subtracting 21 from 23.
Append the next digit (7) from the dividend to 2 and continue with: 27 / 3

On to step 5:
The number 3 fits into 27 9 times, leaving a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 9279.0
Subtracting 27 from 27 leaves us with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 3

Advancing to step 6:
If we divide 5 by 3, we get 1 and a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 92791.0
If we take 3 away from 5, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
The number 3 fits into 20 6 times, leaving a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 92791.6
Deduct 18 from 20 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 8:
3 goes into 20 6 times with a remainder of 2.
The next digit of our result is 6. 
Result so far: 92791.66
The remainder is 2 after subtracting 18 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final result is 92791.66 with a remainder of 0.002.