The number of team B is (2/5) of that of team A. From team A (1/8) is transferred to team B, and then 28 people are transferred from team A. At this time, the number of the two teams is equal. How many people are there in team A?
乙队人数是甲队的(2/5)，从甲队调(1/8)到乙队，再从甲队调走28人，这时两队人数相等，甲队原有多少人？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (1/8) - (2/5) - (1/8)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">28 / (7/20)</gadget>
<output>80</output>

<result>80</result>