38 people passed the mid-term exam in Class 6 (1), and 12 people were excellent. What is the excellent rate of this exam?
六(一)班期中考试中38人及格，12人优秀，这次考试的优秀率多少
<gadget id="calculator">38 + 12</gadget>
<output>50</output>

<gadget id="calculator">12 / 50</gadget>
<output>6/25 = around 0.24</output>

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

<gadget id="calculator">(6/25) * 1</gadget>
<output>6/25 = around 0.24</output>

<result>6/25 = around 0.24</result>