There are 77 people skipping rope, which is more than running students (2/5). How many people are running?
跳绳有77人，比跑步的同学多(2/5)，跑步有多少人？
<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>