The canteen buys 600kg of rice and 600kg of flour each. The wholesale price of rice is 2.55 yuan per kilogram, and the wholesale price of flour is 3.45 yuan per kilogram. How much did the canteen spend on buying rice and flour? (calculated in two ways)
食堂购进大米和面粉各600kg，大米的批发价是每千克2.55元，面粉的批发价是每千克3.45元．食堂购进大米和面粉一共用了多少钱？(用两种方法计算)
<gadget id="calculator">2.55 * 600</gadget>
<output>1_530</output>

<gadget id="calculator">3.45 * 600</gadget>
<output>2_070</output>

<gadget id="calculator">1_530 + 2_070</gadget>
<output>3_600</output>

<result>3_600</result>