The Institute of Agricultural Sciences conducted a seed germination test. 20 out of 200 seeds did not germinate. What is the germination rate of this batch of seeds?
农科所进行种子发芽试验，200粒种子没有发芽的有20粒，这批种子的发芽率是多少．
<gadget id="calculator">200 - 20</gadget>
<output>180</output>

<gadget id="calculator">180 / 200</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>