If 400 seeds are used for a germination test, 20 seeds do not germinate, what is the germination rate?
用400粒种子做发芽试验，20粒没有发芽，发芽率是多少．
<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>