Sharon's odometer reading was 41850 on January 1 and 42955 on January 31

Sharon's odometer reading was 41850 on January 1 and 42955 on January 31. She bought 23.32, 25.65, 21.12, and 15.70 gallons of gas @$2.95 per gallon. She received a 1.5% discount on her gasoline purchases. How many miles did she drive during January? How much gasoline did she purchase? How much did the gasoline costs before discount? After discount? What was the mileage assuming the vehicle tank contained 3 gallons on January 1 and 7 gallons on January 31? If Sharon drove her vehicle 10000 miles per year, what is the average mileage?