Wang Jun used 80 mung beans to do a germination test, and 78 of them germinated. What is the germination rate of mung beans?
王军用80粒绿豆做发芽试验，发芽的有78粒，绿豆的发芽率为多少．
<gadget id="calculator">78 / 80</gadget>
<output>39/40 = around 0.975</output>

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

<gadget id="calculator">(39/40) * 1</gadget>
<output>39/40 = around 0.975</output>

<result>39/40 = around 0.975</result>