Your task is to create an HTML page that will include an external
javascript file. The js file will display an alert that will say
"yourFirstName yourLastName".
Next, you will prompt the user for two number values (having default
values within the prompt), store the entered values into variables,
multiply those two variables and store into a results variable,
and write to the document a string concatenated with the entered
variable values and the result value.
ex: The product of 2 * 3 is 6