please solve thease 2 question

6) Scheduled payments of $500 in 100 days and $800 in 200 days are instead to be paid in a single payment today. If interest at 6% is allowed, what single payment today is required to settle the two debts? (Draw the picture first!) (6) 3) To finance the development of a new computer screen, Hobart Inc. borrowed $40 000 at 6% compounded monthly. If the loan is to be repaid in equal quarterly payments over eight years, what is the size of the quarterly payment? (6)