The school bought 80 sets of desks and chairs, each desk was 135 yuan, and each chair was 45 yuan. How much does the school spend to buy these desks and chairs?
学校买了80套桌椅，每张课桌135元，每把椅子45元．学校买这批课桌椅一共要用多少元？
<result>1_440</result>