in reply to
@array elements multiplication with another array elements.
Hello, and welcome to the monastery New Perlmonk.
Please have a look at How (Not) To Ask A Question. The amount of effort put forth in the asking of your question will usually correlate with that of the answers you receive. You might also read through Choosing a username.
Perlintro (Variable Types) in conjunction with Arrays: A Tutorial/Reference will be a good start at understanding how arrays work and learning how to work with their elements.
map will help you to understand tobyink's solution.