Would you please help solve the questions listed below?

Given the following data, answer four questions about the money supply and the money multiplier. Value Total reserves $36 billion Transactions deposits $600 billion Cash held by public $300 billion Bonds held by public $400 billion Stocks held by public $140 billion Gross domestic product $8 trillion Interest rate 6% Required reserve ratio 0.05 a. How large is the money supply (M1)? billion b. How much excess reserves are there? billion c. What is the money multiplier? d. What is the available lending capacity for the banking system? billion