The fruit shop shipped 150 kg of apples, and 12 boxes of pears, each 15 kg. How many kilograms less shipped apples than pears?
水果店运来苹果150千克，又运来12箱梨，每箱15千克．运来苹果比梨少多少千克？
<gadget id="calculator">12 * 15</gadget>
<output>180</output>

<gadget id="calculator">180 - 150</gadget>
<output>30</output>

<result>30</result>