3 teachers led 45 students to visit the underwater world. They spent a total of 1995 yuan on tickets, 65 yuan for each adult ticket, and how much is each student ticket?
3位老师带领45名学生去参观海底世界，买门票亿共花了1995元，成人票每张65元，学生票每张多少元钱？
<gadget id="calculator">65 * 3</gadget>
<output>195</output>

<gadget id="calculator">1_995 - 195</gadget>
<output>1_800</output>

<gadget id="calculator">1_800 / 45</gadget>
<output>40</output>

<result>40</result>