Suppose you are working for X Corporation and want to retire in 20 years. After your retirement, you want to purchase a land in your hometown and for that you need to have BDT 1 million taka. Today, you want to make a single deposit in the bank for purchasing this land 20 years from now. How much money you must place in a bank, earning 10% interest? (You must show the detailed calculation process. Otherwise, marks will be deducted)