A tree planting team planted a total of 800 trees, but 40 died. Find the survival rate.
一个植树队一共种了800棵树，死了40棵，求成活率．
<gadget id="calculator">800 - 40</gadget>
<output>760</output>

<gadget id="calculator">760 / 800</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>