title: Finding if a variable has a decimal place / is a decimal number in Lua Corona SDK
body: <p>I'm creating a math application, the question answers are stored in a variable called answer, i need a way to check if the answer has a decimal point in it, so for example say if the question generated is 4 divided by 3, i want to be able to check if the answer will have a decimal in it. Thank you.</p>