The school cafeteria shipped 4 bags of rice and 4 bags of flour each. The rice was 50 kilograms per bag and the flour was 25 kilograms per bag. How many kilograms of food were shipped in total?
学校食堂运来大米和面粉各4袋，大米每袋50千克，面粉每袋25千克，一共运来粮食多少千克？
<gadget id="calculator">50 + 25</gadget>
<output>75</output>

<gadget id="calculator">75 * 4</gadget>
<output>300</output>

<result>300</result>