We're dividing 449570 by 3 
The aim is to understand the frequency of 3 in 449570.

Let's proceed to step 1:
The number 3 fits into 4 1 times, leaving a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 3 from 4 and we're left with 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 3

Going ahead to step 2:
The number 3 fits into 14 4 times, leaving a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
Subtract 12 from 14 to get 2.
Grab the next digit (9) from the dividend, add it to 2, then carry on: 29 / 3

Moving on to step 3:
When dividing 29 by 3, we get 9 with a remainder of 2.
The next digit of our result is 9. 
Result so far: 149.0
The remainder is 2 after subtracting 27 from 29.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 3

Let's proceed to step 4:
When dividing 25 by 3, we get 8 with a remainder of 1.
Put 8 as the next digit of the answer. 
Result so far: 1498.0
The remainder is 1 after subtracting 24 from 25.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 3

On to step 5:
If we divide 17 by 3, we get 5 and a remainder of 2.
The next digit of our result is 5. 
Result so far: 14985.0
If we subtract 15 from 17, we get 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 3

Let's proceed to step 6:
When dividing 20 by 3, we get 6 with a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 149856.0
Subtracting 18 from 20 leaves us 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 7:
The number 3 fits into 20 6 times, leaving a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 149856.6
The remainder is 2 after subtracting 18 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
If we divide 20 by 3, we get 6 and a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 149856.66
Subtracting 18 from 20 leaves us 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.

The final result is 149856.66 with a remainder of 0.002.