An investor wants to save money to purchase real estate. She beys an annuity with monthly payments that eam 5% interest, compounded monthly. Payments will be made at the end of each month. Find the total value of the annuity in 18 years if each monthly payment is $58. Do not round any intermediate computations, and round your final answer to the nearest cent, If necessary, refer to the list of financial formulas. Calculate the number of oxygen atoms in a 60.0g sample of forsterite (Mg2SiO4). Be sure your answer has a unit symbol if necessary, and round it to 3 significant digits