Children's tickets for "Spider-Man 3" are 7 yuan per show, and 45 people from class 1 of the third grade will go to see them. How much does it cost to buy tickets? how much
《蜘蛛侠3》儿童票每场7元，三年级1班45人去看，买门票需要多少钱？多少元
<gadget id="calculator">45 * 7</gadget>
<output>315</output>

<result>315</result>