Teacher Chen has to give English classes to 3 classes every day, and the number of students in each class is between 32-38. How many students does Teacher Chen have to teach every day?
陈老师每天要给3个班上英语课，每个班学生人数都在32-38人之间，陈老师每天大约要给多少名学生上课．
<gadget id="calculator">30 * 3</gadget>
<output>90</output>

<gadget id="calculator">40 * 3</gadget>
<output>120</output>

<gadget id="calculator">90 - 120</gadget>
<output>-30</output>

<result>-30</result>