The survival rate of the trees planted by Class 5 and Class 1 on Arbor Day was 95%, and there were 10 trees that did not survive. How many trees did they plant in total?
植树节五1班同学植树的成活率是95%，没有成活的有10棵．他们共植树多少棵？
<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>