A batch of seeds, the ratio of the number of germinated seeds to the number of ungerminated seeds is 9:1, what is the germination rate of this batch of seeds?
一批种子，发芽粒数与没发芽粒数的比是9：1，这批种子的发芽率是多少．
<gadget id="calculator">9 + 1</gadget>
<output>10</output>

<gadget id="calculator">9 / 10</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>