There are three classes in grade five in a certain school. It is known that class one, class two, and class three have the same number of students. The number of boys in class one is the same as the number of girls in class two. The boys in class three account for (3/ 8), then how many girls in the whole grade account for the students in the whole grade.
某校五年级共有三个班，已知一班、二班、三班各班的人数相同，一班的男生数与二班的女生数相同，三班的男生占全年级男生的(3/8)，那么全年级女生占全年级学生的多少．
<gadget id="calculator">1 + 16</gadget>
<output>17</output>

<gadget id="calculator">16 + 16 + 1</gadget>
<output>33</output>

<gadget id="calculator">17 / 33</gadget>
<output>17/33 = around 0.515152</output>

<result>17/33 = around 0.515152</result>