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  1. or download this
    sub func() { return 8 }
    print func / 4;         # 2
    
  2. or download this
    sub foo { return 8 }
    print foo + 4;          # 8
    ...
    sub bar() { return 8 }
    print bar + 4;          # 12
    print bar() + 4;        # 12