BASH: how to perform arithmetic on numbers in a pipe

Question

I am getting a stream of numbers in a pipe, and would like to perform some operations before passing them on to the next section, but I\'m a little lost about how I would go

Answer 1

Or..

echo "1 2 3 4 5" | xargs -n 1 | while read number 
 do
   echo $((number * number))
 done