The aircraft model group has more people than the dance group (1/4), so the number of people in the aircraft model group is the total number of people in the two groups
航模组比舞蹈组人数多(1/4)，那么航模组的人数是两小组总人数的多少
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<result>5/9 = around 0.555556</result>