In one exam, 100 students in the sixth grade achieved excellent results, and 25 students did not achieve excellent results. What is the excellent rate?
一次考试，六年级成绩达到优秀的100人，未达到优秀的25人，则优秀率是多少
<gadget id="calculator">100 + 25</gadget>
<output>125</output>

<gadget id="calculator">100 / 125</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">(4/5) * 1</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>