8辆汽车3天节约汽油109.56千克．平均每辆汽车每天节约汽油多少千克？
解：109.56÷3÷8＝4.565(千克)
如图是胃得乐牌胃药的部分标识．胃药中所含的物质能中和胃里过多的胃酸（胃液质量约100g，主要是成分为盐酸）．某患者按标识上的服用方法服药后病情好转．
试计算：
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She tennis in the school team. Now she is a professional tennis player.
