Instead of tying in 3*10^3 for 3000. whats the shortcut to do this with
regards to the scientific calculator where you have the 'E' button right
beside the Ans button. That 'E' button represents x10^*, where * is any
integer.

For an example. How do you type 3.35Km? do you have to do it like
(3.35*10^3)m?