There were 72 people in the skating rink in the morning, 44 people left at noon, and 85 people came in the afternoon. How many people are skating at this time?
滑冰场上午有72人，中午有44人离去，下午又来了85人．这时有多少人在滑冰？
<gadget id="calculator">72 - 44</gadget>
<output>28</output>

<gadget id="calculator">28 + 85</gadget>
<output>113</output>

<result>113</result>