The greening team planted a total of 400 trees, and 20 died. What is the survival rate of these trees?
绿化小组共种了400棵树，死了20棵，这批树的成活率是多少．
<gadget id="calculator">400 - 20</gadget>
<output>380</output>

<gadget id="calculator">380 / 400</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>