A microwave oven is 450 yuan, which is 75 yuan more expensive than a repeater. The price of a refrigerator is 8 times that of a repeater. How much is a refrigerator?
一只微波炉450元，比一台复读机贵75元，一台电冰箱的价钱是复读机的8倍，电冰箱多少钱？
<gadget id="calculator">450 - 75</gadget>
<output>375</output>

<gadget id="calculator">375 * 8</gadget>
<output>3_000</output>

<result>3_000</result>