The fruit shop shipped 180 kilograms of apples, and 3 times as many pears as apples. How many kilograms less apples were shipped than pears?
水果店运来苹果180千克，运来的梨是苹果的3倍，运来的苹果比梨少多少千克？
<gadget id="calculator">180 * 3</gadget>
<output>540</output>

<gadget id="calculator">540 - 180</gadget>
<output>360</output>

<result>360</result>