The grain store shipped 20 bags of rice and 20 bags of flour each. The weight of each bag of flour was 25 kilograms, and the weight of each bag of rice was 50 kilograms. How many kilograms did the rice and flour weigh in total?
粮店运来大米和面粉各20袋，面粉每袋重25千克，大米每袋重50千克，运来大米和面粉共重多少千克？
<gadget id="calculator">50 + 25</gadget>
<output>75</output>

<gadget id="calculator">75 * 20</gadget>
<output>1_500</output>

<result>1_500</result>