A food factory uses 18 bags of flour in the morning and 22 bags of flour in the afternoon. Each bag of flour is 25 kilograms. How many kilograms of flour are used in total?
一个食品厂上午用去18袋面粉，下午用去22袋面粉，每袋面粉25千克，一共用去多少千克面粉？
<gadget id="calculator">18 + 22</gadget>
<output>40</output>

<gadget id="calculator">40 * 25</gadget>
<output>1_000</output>

<result>1_000</result>