There are 1000 seeds in a batch, and 100 seeds did not germinate. What is the germination rate?
一批种子有1000颗，没发芽的有100颗，发芽率是多少．
<gadget id="calculator">1_000 - 100</gadget>
<output>900</output>

<gadget id="calculator">900 / 1_000</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>