"कैल्क्युलेटर" "त्रुटि" "0" "1" "2" "3" "4" "5" "6" "7" "8" "9" "DELETE" "CLR" "sin" "cos" "tan" "e" "ln" "log" "(" ")" "मूल पैनल" "उन्नत पैनल" "इतिहास साफ़ करें" "पाठ की प्रतिलिपि बनाई गई."