MATH:)¤
posted by Asia .
JayZ's office contains 12 file cabinets. Three cabinets have 4 drawers,all the other cabinets have 5 drawers. JayZ's assisant is typing new labels for each file cabinet drawer. How many labels will she need?

12  3 = 9
(3 * 4) + (9 * 5) = ?