The sixth grade students in the experimental primary school planted 120 trees, and they survived (19/20), how many trees did not survive.
实验小学六年级同学植树120棵，成活了(19/20)，没成活的有多少棵．
<gadget id="calculator">19 / 20</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">120 * (1/20)</gadget>
<output>6</output>

<result>6</result>