How many entries would be needed in a “rainbow table” that included all possible salt values and all possible salted hash values?

 In the PHP function password_hash , the default algorithm is brcypt which produces a text string derived from a 16-byte “salt” value and a 24-byte salted hash of the supplied password. How many entries would be needed in a “rainbow table” that included all possible salt values and all possible salted hash values? Show your calculations.