20 seeds are used for a germination test, and 18 seeds germinate, what is the germination rate?
用20粒种子做发芽试验，18粒种子发芽，发芽率是多少．
<gadget id="calculator">18 / 20</gadget>
<output>9/10 = around 0.9</output>

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

<gadget id="calculator">(9/10) * 1</gadget>
<output>9/10 = around 0.9</output>

<result>9/10 = around 0.9</result>