CREATE TABLE table_name_46 (platform_ VARCHAR2, _frequency_ VARCHAR2, mhz VARCHAR2, model VARCHAR2)

What is the platform & frequency [MHz] of the whr-g54s model?
SELECT platform_ & _frequency_ AS "mhz" FROM table_name_46 WHERE model = "whr-g54s"
SELECT "platform_" & "_frequency_" AS "mhz" FROM "table_name_46" WHERE "model" = "whr-g54s"