How did they get 3.85 as the money multiplier?

Use the following data to answer the below question. Required reserve ratio is 10% Checkable deposits $1000 Savings Deposits $174 Total reserves $194 Currency held by the public $89 What is the level of required reserves? What is the level of excess reserves? 94 What is the value of the monetary base $ What is the currency ratio? [Round answer to 2 decimal places/ What is the money multiplier? [Round anwer to 2 decimal places/