584209 ÷ 3 
The aim is to understand the frequency of 3 in 584209.

Advancing to step 1:
3 goes into 5 1 times with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 3 from 5 and we're left with 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 3

On to step 2:
If we divide 28 by 3, we get 9 and a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 19.0
Subtracting 27 from 28 leaves us with 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 3

Moving on to step 3:
The number 3 fits into 14 4 times, leaving a remainder of 2.
The next digit of our result is 4. 
Result so far: 194.0
The remainder is 2 after subtracting 12 from 14.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 3

On to step 4:
If we divide 22 by 3, we get 7 and a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 1947.0
If we subtract 21 from 22, we get 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 3

Going ahead to step 5:
10 divided by 3 is 3 with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 19473.0
If we take 9 away from 10, we end up with 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 3

On to step 6:
The number 3 fits into 19 6 times, leaving a remainder of 1.
The next digit of our result is 6. 
Result so far: 194736.0
Deduct 18 from 19 and we're left 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:
10 divided by 3 is 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 194736.3
If we subtract 9 from 10, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 8:
10 divided by 3 is 3 with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 194736.33
If we subtract 9 from 10, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final result is 194736.33 with a remainder of 0.001.