(300×3:30×150-1500)+2009
(300(1)*3(2):30(3)*150(4)-1500)(5)+2009 = 5009 1) 300*3 = 900 2) 900 : 30 = 30 3)30 * 150 = 4500 4)4500 - 1500 = 3000 5) 3000 + 2009 = 5009
(300×3÷30×150-1500)+2009=5009