calc is a scientific function that can be used to calculate scientific quantities. On its own, calc is not able to output responses, therefore it needs the disp function to display the result in the terminal. By default, it utilizes the [expr] type card. It may also use formula cards. The task cards that can be used are:
{<number>}, which forces the end result to be displayed in n decimal places.{sci} or {eng}, which returns a number in either scientific or engineering form, respectively.