The school arranges students to listen to the report in the conference room. If every 3 people sit on a bench, then there are 48 people left unoccupied; if every 5 people sit on a bench, then exactly two benches will be vacant. How many students listen to the report?
学校安排学生到会议室听报告．如果每3人坐一条长椅，那么剩下48人没有坐；若每5人坐一条长椅，则刚好空出两条长椅．听报告的学生有多少人．
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">48 + 10</gadget>
<output>58</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">58 / 2</gadget>
<output>29</output>

<gadget id="calculator">29 * 3</gadget>
<output>87</output>

<gadget id="calculator">87 + 48</gadget>
<output>135</output>

<result>135</result>