809260 ÷ 3 
The aim is to understand the frequency of 3 in 809260.

Let's proceed to step 1:
The number 3 fits into 8 2 times, leaving a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 6 from 8 leaves us with 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 3

Step 2:
If we divide 20 by 3, we get 6 and a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 26.0
If we take 18 away from 20, we end up with 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 3

Moving on to step 3:
29 divided by 3 is 9 with a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 269.0
Deduct 27 from 29 and we're left with 2.
Fetch the next digit (2) from the dividend, attach it to 2 and continue: 22 / 3

On to step 4:
3 can be fit into 22 7 times, resulting in a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 2697.0
Deduct 21 from 22 and we're left with 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 3

Moving on to step 5:
If we divide 16 by 3, we get 5 and a remainder of 1.
Write down 5 as next digit of the result. 
Result so far: 26975.0
If we take 15 away from 16, we end up with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 3

Step 6:
When dividing 10 by 3, we get 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 269753.0
If we take 9 away from 10, we end up 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:
3 can be fit into 10 3 times, resulting in a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 269753.3
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.

Going ahead to step 8:
The number 3 fits into 10 3 times, leaving a remainder of 1.
The next digit of our result is 3. 
Result so far: 269753.33
Deduct 9 from 10 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.

The final result is 269753.33 with a remainder of 0.001.