There are 56 students who participated in the mathematics quiz, and 42 of them achieved excellent results. What is the excellent rate?
有56名同学参加数学小测验，其中42名达到了优秀，优秀率是多少．
<gadget id="calculator">42 / 56</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">(3/4) * 1</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>