Wild red-crowned cranes, a national first-class protected animal, in 2001 there were about 2,000 in the world, and my country accounted for (1/4). How many are there in our country?
国家一级保护动物野生丹顶鹤，2001年全世界约有2000只，我国占其中的(1/4)．我国约有多少只？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">2_000 * (1/4)</gadget>
<output>500</output>

<result>500</result>