300 seeds are used for a germination test, and 30 of them do not germinate. What is the germination rate?
用300粒种子做发芽试验，有30料没有发芽，发芽率是多少．
<gadget id="calculator">300 - 30</gadget>
<output>270</output>

<gadget id="calculator">270 / 300</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>