1. Piter took a retirement savings program from a bank with a monthly deposit value of IDR 5,000,000/month for 10 years with a deposit interest rate of 4.5%. Currently he is 43 years old. After age 53, Piter no longer needs to make regular deposits, so his savings will be subject to interest at 7% for the next 10 years. At the age of 63, the bank will disburse the savings on a monthly basis of IDR 10,000,000/month at retirement age up to 73 years (10 years) with an estimated inflation of 5% per year. From the illustration above, will investing in a bank be profitable from an early age? (provide supporting calculations and use appropriate assumptions if necessary).