In a batch of experimental seeds, 45 germinated and 5 did not germinate. What is the germination rate of this batch of seeds?
一批实验种子，有45粒发芽，5粒未发芽，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>