In extracurricular activities, there are 15 more students who skip rope than those who play skateboards, and fewer (1/3) students who play skateboards than those who skip rope. How many people play skateboards?
课外活动，跳绳的同学比玩滑板的多15人，玩滑板的同学比跳绳少(1/3)，玩滑板的有多少人？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">15 / (1/3)</gadget>
<output>45</output>

<gadget id="calculator">45 - 15</gadget>
<output>30</output>

<result>30</result>