If 800 watermelon seedlings are planted, and only 160 survive the frost, what is the survival rate of the watermelon seedlings?
栽800株西瓜苗，因为霜冻只有160株成活，则西瓜苗的成活率是多少．
<gadget id="calculator">160 / 800</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">(1/5) * 1</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>