How many yellow lightwaves ( = 580 nm) will fit into a distance in space equal to the thickness of a piece of paper (0.003

How many “yellow” lightwaves (λ = 580 nm) will fit into a distance in space equal to the thickness of a piece of paper (0.003 in.)? How far will the same number of microwaves (v = 10¹⁰ Hz, i.e., 10 GHz, and v = 3 × 10⁸ m/s) extend?