The grain store shipped 40 bags of flour and 40 bags of rice, each bag of flour weighed 25 kg, and each bag of rice weighed 50 kg. How many kilograms of flour and rice are shipped in total?
粮店运来面粉和大米各40袋，面粉每袋重25千克，大米每袋重50千克．运来的面粉和大米一共多少千克？
<gadget id="calculator">25 + 50</gadget>
<output>75</output>

<gadget id="calculator">75 * 40</gadget>
<output>3_000</output>

<result>3_000</result>