Let's divide 748127 by 3
The aim is to understand the frequency of 3 in 748127.

Advancing to step 1:
3 can be fit into 7 2 times, resulting in a remainder of 1.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 6 from 7 and we're left with 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 3

Step 2:
14 divided by 3 is 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
Subtract 12 from 14 to get 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 3

On to step 3:
28 divided by 3 is 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 249.0
Deduct 27 from 28 and we're left with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 3

On to step 4:
3 can be fit into 11 3 times, resulting in a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 2493.0
Subtract 9 from 11 to get 2.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 3

On to step 5:
3 can be fit into 22 7 times, resulting in a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 24937.0
If we take 21 away from 22, we end up with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 3

Moving on to step 6:
3 goes into 17 5 times with a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 249375.0
Subtracting 15 from 17 leaves us 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.

Let's proceed to step 7:
3 can be fit into 20 6 times, resulting in a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 249375.6
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.

Step 8:
3 can be fit into 20 6 times, resulting in a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 249375.66
If we take 18 away from 20, 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.

The final result is 249375.66 with a remainder of 0.002.