Please help me with clear steps by steps

You are planning to purchase a house that will require some renovations. 1. You will have a $350,000 mortgage for 30 years at the rate of 2.39%. What will your monthly payment be? 2. If you take the full term of the loan, how much interest will you have paid? 3. You decide to do some remodeling in the kitchen. Your parents agree to lend you the money, but you insist on paying them interest. The agreement is that they will lend you $6000.00 at a simple interest rate of 1.5% per year. In how many months will the interest be $360. 4. If the $6000.00 was invested in a savings account that paid 2.5% interest compounded monthly, how much interest would be earned after 3 years