How many people go hunting? On average, 12 people get 5 hares, 15 people get 7 pheasants, and 5 people get 1 wolf. There are 65 animals in total for the three kinds of prey. What is the number of people who participated in the hunting?
有若干人去打猎，平均12人猎得5只野兔，15人猎得7只野鸡，5人猎得1只狼，三种猎物合计65只，求参加打猎的人数？
<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">7 / 15</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(5/12) + (7/15) + (1/5)</gadget>
<output>13/12 = around 1.083333</output>

<gadget id="calculator">65 / (13/12)</gadget>
<output>60</output>

<result>60</result>