The survival rate of a sapling experiment is 96%. In order to ensure 480 saplings survive, at least how many saplings should be planted.
一种树苗实验成活率是96%，为了保证成活480棵，至少要种多少棵树苗．
<gadget id="calculator">96 / 100</gadget>
<output>24/25 = around 0.96</output>

<gadget id="calculator">480 / (24/25)</gadget>
<output>500</output>

<result>500</result>