Grandpa Zhang’s rice harvest last year was 3,000 kilograms. This year’s harvest is 25% less than last year’s. How many kilograms of rice does Grandpa Zhang’s family harvest this year?
张爷爷家去年稻谷的收成是3000千克，今年的收成比去年减产了二成五，张爷爷家今年收稻谷多少千克？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">3_000 * (3/4)</gadget>
<output>2_250</output>

<result>2_250</result>