NaN means: N → Not A → A N → Number It appears in computing when the program attempts a calculation that shouldn't result in a number Examples🤠 • x ÷ 0 = NaN Explanation: x ÷ 0 = ∞, Infinity is not a number; it is the concept of "without end" Explanation of the explanation🗣️🔥🔥: The most basic way to define division is "How many y's fit inside the number x", and there are infinitely many zeros that fit inside any x • √-1 = NaN (Correct)🗣️🔥 The square root of -1 was not defined because it didn't make sense, and so imaginary numbers (i) emerged, which somewhat resolved this issue, which is why √-1 = i The second way it can appear is when you try to convert text to a value Example: Converting "Sun" to a value is invalid and it's not a number, therefore, = NaN

Oh but its ok.