There were 407 students in the performance on New Year's Day. Among them, female students who did not win the prize accounted for 1/9 of the female students, 16 male students did not win the prize, and the number of male and female students who won the prize was equal. How many female students are there in the performance?
元旦文艺表演，上场的同学共407人，其中未得奖的女同学占女同学人数的(1/9)，未得奖的男同学有16人，得奖的男、女同学人数相等．问演出的女同学有多少人？
<gadget id="calculator">407 - 16</gadget>
<output>391</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 - (1/9)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">1 + (8/9)</gadget>
<output>17/9 = around 1.888889</output>

<gadget id="calculator">391 / (17/9)</gadget>
<output>207</output>

<result>207</result>