A maize seed germination experiment was carried out. As a result, 45 seeds germinated and 5 did not germinate. What is the germination rate of this batch of seeds
做玉米种子发芽实验，结果45粒发芽，5粒没有发芽．这批种子的发芽率是多少
<gadget id="calculator">45 + 5</gadget>
<output>50</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>