In a teacher-student symposium, one teacher looks at the students, and the students are three times as many as other teachers, and one student looks at the teacher, and the other students are twice as many as the teacher, so how many students are there in total?
在一次师生座谈会上，一位老师看学生，学生是其他老师的3倍，一位学生看老师，其他学生是老师的2倍，那么学生共有多少人．
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">4 / 1</gadget>
<output>4</output>

<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<gadget id="calculator">8 + 1</gadget>
<output>9</output>

<result>9</result>