The price of a water dispenser is 140 yuan, and the price of a microwave oven is three times that of a water dispenser. How much does Uncle Zhang need to buy a water dispenser and a microwave oven?
一台饮水机的价格是140元，一台微波炉的价格是饮水机的3倍，张叔叔买一台饮水机和一台微波炉，一共需要多少钱？
<gadget id="calculator">140 * 3</gadget>
<output>420</output>

<gadget id="calculator">140 + 420</gadget>
<output>560</output>

<result>560</result>