batch of pineapples, oranges and apples are shipped from the fruit shop. The weight of pineapples is 80 kilograms. The weight of oranges is 25 kilograms less than that of pineapples. If the weight of oranges is tripled, that is the weight of apples. How many kilograms does an apple weigh?
水果店运来一批菠萝、橘子和苹果，菠萝有80千克，橘子比菠萝少25千克，把橘子的重量增加到自身的3倍，就是苹果的重量，苹果有多少千克？
<gadget id="calculator">80 - 25</gadget>
<output>55</output>

<gadget id="calculator">55 * 3</gadget>
<output>165</output>

<result>165</result>