The school organized the students to go on a spring outing. On the first day of our class, 3 students paid a total of 135 yuan. According to this calculation, how much will the 15 students in our class have to pay in total for the spring outing?
学校组织同学们去春游，我们班第一天有3个同学共交了135元．照这样计算，我们班15个同学去春游，一共要交多少元钱？
<gadget id="calculator">135 / 3</gadget>
<output>45</output>

<gadget id="calculator">45 * 15</gadget>
<output>675</output>

<result>675</result>