How many people hunt, on average 12 people hunt 5 hares, 15 people hunt 7 pheasants, 5 people hunt 1 wild boar, the total number of three preys is 65, how many people participated in the hunting?
若干人打猎，平均12人猎5只野兔，15人猎7只野鸡，5人猎得1只野猪，三种猎物合计65只，参加打猎的有多少人？
<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>