We divide 445559 by 3
The aim is to understand the frequency of 3 in 445559.

Step 1:
4 divided by 3 is 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 1 after subtracting 3 from 4.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 3

Step 2:
3 goes into 14 4 times with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we take 12 away from 14, we end up with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 3

Let's proceed to step 3:
25 divided by 3 is 8 with a remainder of 1.
The next digit of our result is 8. 
Result so far: 148.0
The remainder is 1 after subtracting 24 from 25.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 3

Moving on to step 4:
When dividing 15 by 3, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 1485.0
Deduct 15 from 15 and we're left with 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 3

On to step 5:
The number 3 fits into 5 1 times, leaving a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 14851.0
Subtract 3 from 5 to get 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 3

Step 6:
The number 3 fits into 29 9 times, leaving a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 148519.0
If we subtract 27 from 29, 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.

Moving on to step 7:
20 divided by 3 is 6 with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 148519.6
Deduct 18 from 20 and we're left 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.

Advancing to step 8:
When dividing 20 by 3, we get 6 with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 148519.66
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.

Our division results in 148519.66 with a remaining 0.002.