3 teachers take 45 students to the park for an autumn tour, and each ticket costs 5 yuan. How much does it cost to buy tickets?
3名老师带45名学生去公园秋游，每张门票要5元．买门票一共要多少元？
<gadget id="calculator">3 + 45</gadget>
<output>48</output>

<gadget id="calculator">48 * 5</gadget>
<output>240</output>

<result>240</result>