There are 40 students in class 51, 13 of them participated in the "Spring Bud Cup" calligraphy and painting competition, how many people participated in the competition accounted for the whole class.
五1班有学生40人，其中13人参加了"春芽杯"书画比赛，参加比赛的人数占全班人数的多少．
<gadget id="calculator">13 / 40</gadget>
<output>13/40 = around 0.325</output>

<result>13/40 = around 0.325</result>