Mom uses a frying pan to fry fish. Only two fish can be fried at a time. One side needs to be fried for 4 minutes. Each fish needs to be fried on both sides. How many minutes does it take to finish frying three fish?
妈妈用平底锅煎鱼，每一次只能煎两条鱼，一面要煎4分钟，每条鱼要煎两面，煎完3条鱼要多少分钟．
<gadget id="calculator">4 + 4 + 4</gadget>
<output>12</output>

<result>12</result>