If 50 seeds are used for a germination test, 5 of them fail to germinate. What is the germination rate of the seeds?
用50粒种子做发芽试验，结果有5粒没有发芽，种子的发芽率是多少．
<gadget id="calculator">50 - 5</gadget>
<output>45</output>

<gadget id="calculator">45 / 50</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>