60 classes planted 60 trees in 6 years, and 57 survived. What is the survival rate?
六年6班植树60棵，成活了57棵，成活率为多少．
<gadget id="calculator">57 / 60</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(19/20) * 1</gadget>
<output>19/20 = around 0.95</output>

<result>19/20 = around 0.95</result>