my country is one of the most water-scarce countries in the world. The per capita fresh water resource is 2,200 cubic meters, which is less than the world's per capita fresh water resource (3/4). So how much is the world's per capita fresh water resource?
我国是世界上最缺水的国家之一，人均淡水资源为2200立方米，比世界人均淡水资源少(3/4)，那么世界人均淡水资源为多少？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">2_200 / (1/4)</gadget>
<output>8_800</output>

<result>8_800</result>