The adult ticket of the Science and Technology Museum is 8 yuan, and the student ticket is 5 yuan. How much did Mr. Song take 20 students to visit?
科技馆成人票8元，学生票5元，宋老师带20名学生去参观，花了多少．
<gadget id="calculator">8 * 1</gadget>
<output>8</output>

<gadget id="calculator">5 * 20</gadget>
<output>100</output>

<gadget id="calculator">8 + 100</gadget>
<output>108</output>

<result>108</result>