There are 18 students participating in the school speech activity, accounting for 3/40 of all the students in the school. How many people are there in the school?
有18名学生参加学校讲演活动，占全学校学生的(3/40)，全校有多少人？
<gadget id="calculator">3 / 40</gadget>
<output>3/40 = around 0.075</output>

<gadget id="calculator">18 / (3/40)</gadget>
<output>240</output>

<result>240</result>