The fifth grade students went home by car after the spring outing. The number of people taking a medium-sized coach is half that of taking a bus. In Hebin Xincun, 13 people got off each car, and then the number of people on the bus was three times that of the medium-sized tourist bus. So how many people in the fifth grade have a spring outing?
五年级学生春游后乘车回家．乘中型旅游车的人数是乘大客车的一半．在河滨新村每车各有13人下车，之后大客车上的人数是中型旅游车的人数的3倍．那么五年级共有多少人春游．
<gadget id="calculator">13 * 3</gadget>
<output>39</output>

<gadget id="calculator">39 - 13</gadget>
<output>26</output>

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

<gadget id="calculator">26 / 1</gadget>
<output>26</output>

<gadget id="calculator">26 * 2</gadget>
<output>52</output>

<gadget id="calculator">26 + 52</gadget>
<output>78</output>

<result>78</result>