Elizabeth babysits on the weekends for extra money. Suppose that three neighbors with children are interested in paying Elizabeth to babysit their children. In particular, Mr. and Dr. Brown would be willing to pay $35 to have Elizabeth babysit their children, Mr. Smith would be willing to pay $30 for Elizabeth's babysitting services, and Professor Jones and Mr. Jones would be willing to pay $24 to have her watch their children. If Elizabeth offers to babysit each set of children for an evening for $24, what will be consumer surplus, considering the three sets of children combined? $. (Enter your response using an integer.)