The cafeteria buys 250 kilograms of rice for the first time, and 300 meters for the second time, at 2.9 yuan per kilogram of rice. How much did you pay for the two purchases of rice?
食堂第一次买大米250千克，第二次买大米300米，每千克大米2.9元．两次买大米共付多少元钱？
<gadget id="calculator">250 + 300</gadget>
<output>550</output>

<gadget id="calculator">550 * 2.9</gadget>
<output>1_595</output>

<result>1_595</result>