The store shipped 5 baskets of apples, each weighing 30 kg, and 4 baskets of pears, each weighing 50 kg. How many kilograms more pears than apples did the store ship?
商店运来5筐苹果，每筐30千克，又运来4筐梨，每筐50千克．商店运来的梨比苹果多多少千克？
<gadget id="calculator">50 * 4</gadget>
<output>200</output>

<gadget id="calculator">30 * 5</gadget>
<output>150</output>

<gadget id="calculator">200 - 150</gadget>
<output>50</output>

<result>50</result>