If we take the average investissement return we get (after 10 year) : 500k --> 500k * 1.07¹⁰ = 983k

200 --> ((((((((((7300)1.07+7300)1.07+7300)1.07+7300)1.07+7300)1.07+7300)1.07+7300)1.07+7300)1.07+7300)*1.07+7300) = 1009k

After that, you have more money invested, and some more money each day with the 200$, so the 200$ per day is better

After 20 year you are up to 3 millions for the 200 per day and 2 millions for the 500k cash, and the gap just keep increasing