Let's divide 205003 by 3
The aim is to understand the frequency of 3 in 205003.

On to step 1:
If we divide 2 by 3, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 3

Going ahead to step 2:
20 divided by 3 is 6 with a remainder of 2.
The next digit of our result is 6. 
Result so far: 6.0
Subtract 18 from 20 to get 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 3

Step 3:
3 can be fit into 25 8 times, resulting in a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 68.0
If we subtract 24 from 25, we get 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 3

Advancing to step 4:
3 goes into 10 3 times with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 683.0
If we subtract 9 from 10, we get 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 3

On to step 5:
If we divide 10 by 3, we get 3 and a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 6833.0
If we subtract 9 from 10, we get 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 3

Let's proceed to step 6:
The number 3 fits into 13 4 times, leaving a remainder of 1.
The next digit of our result is 4. 
Result so far: 68334.0
The remainder is 1 after subtracting 12 from 13.
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.
Put 3 as the next digit of the answer. 
Result so far: 68334.3
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.

Moving on to step 8:
3 goes into 10 3 times with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 68334.33
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The quotient of the division is 68334.33, and the remainder is 0.001.