First, your equation would look like 450,450 + 2,020x < 6,060x + 2,020x.
6,060x + 2,020x = 8,080x, so the final equation is 450,450 + 2,020x < 8,080x.
Subtract, and you get 450,450 < 6,060x. Divide, and you get x = 74.33.
Since you can't have 74.33 days, your answer is 75 days.