A certain city held a mathematics competition. Before the competition, it was stipulated that the top 15 could win prizes. The result of the competition: 1 person for the first place, 2 people for the second place, 3 people for the third place, ... 15 people for the 15th place. How many people have won the prize?
某市举行数学竞赛，比赛前规定，前15名可以获奖，比赛结果：第一名1人，第二名并列2人，第三名并列3人，…第15名并列15人．得奖的一共有多少人．
<gadget id="calculator">1 + 15</gadget>
<output>16</output>

<gadget id="calculator">15 / 2</gadget>
<output>15/2 = around 7.5</output>

<gadget id="calculator">16 * (15/2)</gadget>
<output>120</output>

<result>120</result>