In a certain competition, the total average score of a class is 73.4, the average score of boys is 75, and the average score of girls is 73, and there are 12 more girls than boys. How many girls are there in this class?
某次竞赛中，一个班级的总平均分73.4，其中男生平均分是75，女生平均分是73，且女生比男生多12人，请问该班级中女生有多少人？
<gadget id="calculator">12 * 75</gadget>
<output>900</output>

<gadget id="calculator">73.4 * 12</gadget>
<output>880.8</output>

<gadget id="calculator">900 - 880.8</gadget>
<output>19.2</output>

<gadget id="calculator">73 - 73.4 - 73.4</gadget>
<output>-73.8</output>

<gadget id="calculator">75 + (-73.8)</gadget>
<output>1.2</output>

<gadget id="calculator">19.2 / 1.2</gadget>
<output>16</output>

<result>16</result>