The 2nd Squadron of No. 6 planted trees during the holiday. A total of 160 trees were planted alive, and 40 trees did not live. What is the survival rate of these trees?
六2中队假日植树，共植活了160棵树，有40棵没有活，这批树的成活率是多少．
<gadget id="calculator">160 + 40</gadget>
<output>200</output>

<gadget id="calculator">160 / 200</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">(4/5) * 1</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>