The photography team took a group photo for the students in the first team. The total cost of one negative and three photos was 2.70 yuan, and the charge for printing a photo was 0.4 yuan. There are 15 students in the first team. If each person wants one For photos (the cost of the film is shared by 15 people), how much should each person pay?
摄影小组为第一小队同学拍摄一张集体照，一张底片和三张照片共收成本费2.70元，加印一张照片收费0.4元，第一小队有15名同学，如果每人要一张照片(底片费由15人共同分担)，那么每人应付多少元？
<gadget id="calculator">15 - 3</gadget>
<output>12</output>

<gadget id="calculator">12 * 0.4</gadget>
<output>4.8</output>

<gadget id="calculator">4.8 + 2.7</gadget>
<output>7.5</output>

<gadget id="calculator">7.5 / 15</gadget>
<output>0.5</output>

<result>0.5</result>