calculator.rb in boxcars-0.6.1

- old
+ new

@@ -46,10 +46,11 @@
            "Return code written in the Ruby programming language that prints the results to the console. ",
            "If anyone gives you a hard math problem, just ",
            "use the following format and we’ll take care of the rest:\n",
            "${{Question with hard calculation.}}\n",
            "reply only with the following format:\n",
-           "```ruby\n${{only Ruby code that prints the answer}}\n```\n",
+           "```ruby\n${{only Ruby code that prints the answer. " \
+           "If you use puts, make sure to wrap the expression in paranthesis}}\n```\n",
            "```output\n${{Output of your code}}\n```\n\n",
            "Otherwise, you should use this simpler format:\n",
            "${{Question without hard calculation}}\n",
            "Answer: ${{Answer}}\n\n",
            "Do not give an explanation of the answer and make sure your answer starts with either 'Answer:' or '```ruby'."),