The next four questions are based on the following: You invested a lump sum of $$50,000$ in a new company ten years ago and left it there without any further investments and now, today, the company listed on the stock exchange $($an initial public offering, IPO$)$ and your investment is worth $$575,000$

$18)$ Given the above, what total return $($i$.$e$.,$ cumulative, not annualized$)$ did you earn on your investment across the ten years $($i$.$e$.,$ over t$=10$ years$)?$

$19)$Given the above, what was the effective annual return on your investment?

$20)$Given the above, what was the effective monthly return on your investment?

$21)$ For this question, assume the Banker's rule, which is to assume every month has $30$ days, and there are $360$ days in the year. Based on the above, what was the effective daily return on your investment?