Teachers and students in the fourth grade of the third elementary school went to the park to play. There were 158 students and 11 teachers. Adults were 10 yuan each, and students were half priced. How much did they spend on tickets?
第三小学四年级师生去公园游玩，学生有158人，教师有11人，成人每人10元，学生半价，他们买门票一共要花多少钱？
<gadget id="calculator">11 * 10</gadget>
<output>110</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">158 * 5</gadget>
<output>790</output>

<gadget id="calculator">110 + 790</gadget>
<output>900</output>

<result>900</result>