6 teachers lead 69 students to play in the park. Tickets for adults are 15 yuan each, and tickets for children are 6 yuan each. How much do they need to buy tickets in total?
6位老师带领69名学生去公园游玩，成人票每张15元，儿童票每张6元，他们买票一共票需要多少元？
<gadget id="calculator">15 * 6</gadget>
<output>90</output>

<gadget id="calculator">6 * 69</gadget>
<output>414</output>

<gadget id="calculator">90 + 414</gadget>
<output>504</output>

<result>504</result>