Teacher Li and 32 fourth-grade students went to visit the science and technology exhibition together. Adult tickets are 18 yuan each, and children are half price. How much does it cost to buy tickets?
李老师和32名四年级同学一起去参观科技展览，成人门票每张18元，儿童半价，购买门票一共需要多少钱？
<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<gadget id="calculator">9 * 32</gadget>
<output>288</output>

<gadget id="calculator">18 + 288</gadget>
<output>306</output>

<result>306</result>