1 number

     2 5.859874482048838

     3 string

     4 hello, world

     5 string

     6 E is 2.718281828459045

     7 string

     8 3.141592653589793 is PI

     9 number

    10 NaN

    11 number

    12 NaN

    13 number

    14 90.21

    15 number

    16 47.69

    17 string

    18 hello, obj2.toString

    19 string

    20 obj2.toString hello