In the mathematics unit test of Class 51, there are 24 excellent students, and the excellent rate is 40%. How many people are there in Class 51?
五1班数学单元测试，优秀人数有24人，优秀率为40%，五1班有多少人．
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">24 / (2/5)</gadget>
<output>60</output>

<result>60</result>