Let's divide 548228 by 3
The aim is to understand the frequency of 3 in 548228.

Step 1:
When dividing 5 by 3, we get 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 3 from 5, we get 2.
Include the next digit (4) from the dividend after 2, then repeat: 24 / 3

On to step 2:
3 goes into 24 8 times with a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
Deduct 24 from 24 and we're left with 0.
Take the next digit (8) from the dividend and append it to 0, then repeat: 8 / 3

Advancing to step 3:
8 divided by 3 is 2 with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 182.0
If we subtract 6 from 8, we get 2.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 3

Moving on to step 4:
22 divided by 3 is 7 with a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 1827.0
If we take 21 away from 22, we end up with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 3

Going ahead to step 5:
3 can be fit into 12 4 times, resulting in a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 18274.0
Subtract 12 from 12 to get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 3

Let's proceed to step 6:
The number 3 fits into 8 2 times, leaving a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 182742.0
The remainder is 2 after subtracting 6 from 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
The number 3 fits into 20 6 times, leaving a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 182742.6
Subtract 18 from 20 to get 2.
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:
The number 3 fits into 20 6 times, leaving a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 182742.66
If we subtract 18 from 20, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

After the division, we end up with 182742.66 and a remainder of 0.002.