There are 34 members in the chorus, and the ratio of male members to female members is 8:9. How many female members are there?
合唱队有队员34人，其中男队员和女队员的人数比为8：9，女队员有多少人？
<gadget id="calculator">8 + 9</gadget>
<output>17</output>

<gadget id="calculator">9 / 17</gadget>
<output>9/17 = around 0.529412</output>

<gadget id="calculator">34 * (9/17)</gadget>
<output>18</output>

<result>18</result>