The survival rate of a kind of sapling is 95% after the experiment. To ensure that 570 saplings can be planted alive, how many saplings should be planted at least.
一种树苗经过实验成活率是95%，为保证种活570棵，至少应种多少棵树苗．
<gadget id="calculator">95 / 100</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">570 / (19/20)</gadget>
<output>600</output>

<result>600</result>