A batch of seeds was tested for germination, 80 seeds were taken out for the first time, and 72 seeds germinated; for the second time, 50 seeds were taken out, and 45 seeds germinated. Find the germination rate of the batch of seeds.
对一批种子进行发芽试验，第一次取出80粒，发芽72粒；第二次取出50粒，发芽45粒．求这批种子的发芽率．
<gadget id="calculator">72 + 45</gadget>
<output>117</output>

<gadget id="calculator">80 + 50</gadget>
<output>130</output>

<gadget id="calculator">117 / 130</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>