Uncle Wang bought a TV. The original price was 800 yuan, but the current price is 640 yuan. Uncle Wang also wants to buy a microwave oven. The original price is 450 yuan. How much is the current price? (answer with ratio)
王叔叔买了一台电视机，原价800元，现价640元，王叔叔还想买一台微波炉，原价450元，现价多少元？(用比例解答)
<gadget id="calculator">640 * 450</gadget>
<output>288_000</output>

<gadget id="calculator">288_000 / 800</gadget>
<output>360</output>

<result>360</result>