The survival rate of this tree planting is 95%, and only 10 trees did not survive. How many trees were planted this time?
这次植树的成活率是95%，只有10棵没有成活，这次一共植树多少棵．
<gadget id="calculator">95 / 100</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">1 - (19/20)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">10 / (1/20)</gadget>
<output>200</output>

<result>200</result>