The school planted trees and greened, planted 120 trees, and 102 survived. Find the survival rate.
学校植树绿化，种了120棵树，成活了102棵．求成活率．
<gadget id="calculator">102 / 120</gadget>
<output>17/20 = around 0.85</output>

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

<gadget id="calculator">(17/20) * 1</gadget>
<output>17/20 = around 0.85</output>

<result>17/20 = around 0.85</result>