Among the young pioneers who participated in the June 1st party, female players accounted for (4/7) of all the young pioneers, and there were 40 more male players than female players (2/3). How many female players are there?
参加六一联欢活动的少先队员中，女队员占全体少先队员的(4/7)，男队员比女队员的(2/3)多40人，问女队员有多少人？
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(4/7) * (2/3)</gadget>
<output>8/21 = around 0.380952</output>

<gadget id="calculator">1 - (4/7) - (8/21)</gadget>
<output>1/21 = around 0.047619</output>

<gadget id="calculator">40 / (1/21)</gadget>
<output>840</output>

<gadget id="calculator">840 * (4/7)</gadget>
<output>480</output>

<result>480</result>