Portman has $500,000$ shares outstanding, and Judy Davis, an investor, holds $7,500$ shares at the current price $($computed above$).$ Suppose Portman is considering issuing $62,500$ new shares at a price of $$27\mathrm{.}82$ per share. If the new shares are sold to outside investors, by how much will Judy$$s investment in Portman Industries be diluted on a per$-$share basis?