A total of 30 students from Dongfang Primary School participated in the Jiangsu International Chess Competition. The ratio of the number of winners to the number of non-winners was 11:4. How many people won the prize?
东方小学共30个人参加江苏省国际数棋比赛，得奖人数和未得奖人数的比是11：4，得奖人数是多少人？
<gadget id="calculator">11 + 4</gadget>
<output>15</output>

<gadget id="calculator">11 / 15</gadget>
<output>11/15 = around 0.733333</output>

<gadget id="calculator">30 * (11/15)</gadget>
<output>22</output>

<result>22</result>