The cabin number that won us trivia

Cruise ship trivia night. The question was about the number of lifeboats on a specific ship. Nobody knew the answer. My husband, an engineer who memorizes numbers involuntarily, said 'Well our cabin number is the same as the displacement tonnage of the first Carnival ship divided by...' and somehow arrived at the correct answer through a chain of mental math that made no sense to anyone at the table but turned out to be right. We won the trivia tournament by one point. The prize was a keychain and a coupon for twenty percent off a spa treatment. We were treated like celebrities at dinner that night. Our cabin number, 11080, has become a lucky number in our household. My husband brings it up at every party. I let him.