There are 63 students in Class 1, the number of boys is 4/5 of the number of girls, how many girls are there?
六1班共有学生63人，其中男生人数是女生人数的(4/5)，女生有多少人．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 + (4/5)</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">63 / (9/5)</gadget>
<output>35</output>

<result>35</result>