In a germination experiment with a batch of seeds, 80 seeds germinated and 20 did not germinate. what is the germination rate
用一批种子发芽实验，有80粒发芽，20粒没发芽．发芽率是多少
<gadget id="calculator">80 + 20</gadget>
<output>100</output>

<gadget id="calculator">80 / 100</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>