certain unit holds a lottery, and there are prizes for participation. There are 3 first prizes, 10 second prizes, and 60 third prizes. What is the probability that the first lottery winner will win the first prize?
某单位举行抽奖活动，参与就有奖，设有一等奖3名，二等奖10名，三等奖60名，第一抽奖者能中一等奖的可能是多少．
<gadget id="calculator">3 + 60 + 10</gadget>
<output>73</output>

<gadget id="calculator">3 / 73</gadget>
<output>3/73 = around 0.041096</output>

<result>3/73 = around 0.041096</result>