There are 40 students in Class 1 of June, the number of boys is girls (2/3), how many boys are there?
六1班有学生40人，其中男生人数是女生的(2/3)，男生有多少人．
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">40 * (2/5)</gadget>
<output>16</output>

<result>16</result>