12 students took a group photo, each took a photo, paid 6 yuan when taking the photo, and got 3 photos, plus 0.72 yuan for each photo, how much yuan should each person pay on average?
12个同学合影留念，每人一张照片，照相时付6元，可得3张照片，加洗每张0.72元，平均每人应付多少元？
<gadget id="calculator">12 - 3</gadget>
<output>9</output>

<gadget id="calculator">9 * 0.72</gadget>
<output>6.48</output>

<gadget id="calculator">6.48 + 6</gadget>
<output>12.48</output>

<gadget id="calculator">12.48 / 12</gadget>
<output>1.04</output>

<result>1.04</result>