The germination test was carried out on a batch of seeds, 80 seeds were taken out for the first time, and 72 seeds germinated; in the second time, 120 seeds were taken out, and 98 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；第二次又取出120粒，发芽98粒．求这批种子的发芽率．
<gadget id="calculator">72 + 98</gadget>
<output>170</output>

<gadget id="calculator">80 + 120</gadget>
<output>200</output>

<gadget id="calculator">170 / 200</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(17/20) * 1</gadget>
<output>17/20 = around 0.85</output>

<result>17/20 = around 0.85</result>