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 a 1 photo (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，第一小队有十五个同学，如果每个人要一张照片(底片费由十五人共同分担)，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>