The school bought 750 kilograms of watermelons and apples. The weight of the watermelons is 1.5 times that of the apples. How many kilograms are there in the apples? ?
学校买来西瓜和苹果共750千克，其中西瓜的重量是苹果的1.5倍，求苹果有多少千克？？
<gadget id="calculator">1 + 1.5</gadget>
<output>2.5</output>

<gadget id="calculator">750 / 2.5</gadget>
<output>300</output>

<result>300</result>