So how much is 12/0?  Go here to ask Google’s calculator: Google Calculator
Google says Infinity

Now try the calculator from Web 2.0 Calculator
Web 2.0 says “Error: Divide by 0”

Desmos says “Infinity”

went through a lot of online calculators until I found this: http://www.calculator-tab.com/.  It says error and also says division by zero is not defined

Wolfram Alpha says “complex infinity”

Try your cell phone calculator(s) and post any other interesting answers here by leaving a comment…this student meant to write Undefined but wrote something super close :)