Each bag of flour weighs 20 kg, and each bag of rice weighs 40 kg. What is the total weight of 8 bags of flour and 5 bags of rice?
每袋面粉重20千克，每袋大米重40千克，8袋面粉和5袋大米共重多少千克．
<gadget id="calculator">20 * 8</gadget>
<output>160</output>

<gadget id="calculator">40 * 5</gadget>
<output>200</output>

<gadget id="calculator">160 + 200</gadget>
<output>360</output>

<result>360</result>