During extracurricular activities, there are 77 students who jump ropes on the playground, which is more than those who play on slides (2/5). How many students are there on slides?
课外活动时，操场上跳花绳的同学有77人，比玩滑梯的人多(2/5)，玩滑梯的同学有多少人？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">77 / (7/5)</gadget>
<output>55</output>

<result>55</result>