Ricardo earns $17.20 per hour working at the nearby grocery store. Last week, Ricardo worked for 13.25 hours. He then put all of his earnings into the account he uses to buy lunch at school. If Ricardo spends $11.25 on lunch every week during the school year, how many weeks will he be able to buy lunch before he has to put more money into this lunch money account Use the space below to show your thinking. (Explain me how you arrive to your answer like if I knew very little about decimals.)