to promote its new line of low proced, every day, essential grocery items, Gelso s market, a grocery store chain, spent $16$ millton on a broad reaching advertising campaign throughout the greater Los Anglees area, including billboards, radio, tv$,$ and targeted internet ads. Knowing that los angless area about $4$ million people in it$,$ and Gels$9$ns credits the ads causing $200000$ new first time buyers, what is the per person aquistion cost of the new customers?