I need help solving the following problems:

1. You purchased 500 shares of Visa, Inc. (stock symbol: V) last October 2021 at $231 per share. Since then, it paid a $50 per share dividend. You have just decided to sell all your shares at the current stock price (Check in any financial website for the current quote) and then calculate what was your percent and dollar return of your investment?
2. The Miami location of Chick-fil-A, Inc. had 2021 income statement listed net sales = $12.5 million and net income available to common stockholders = $3.2 million. The 2021 year-end balance sheet listed total assets of $52.5 million and common stockholders equity of $21 million with 2 million shares outstanding. Calculate the profit margin, ROA,and ROE
3. You borrow money from your grandma to invest in the market. You grandma agrees to give you $3,000 for 3 years without charging you any interest. You estimate that you can earn 8% per year during the next 3 years. How much money will you make after returning your grandma her loaned money?
4. Calculate the value of this bond: 5-year bond, with $1000 principal, a coupon rate 4.5% and discount rate 6%