There are a total of 40 students in a certain class, among which three good students account for 1/8 of the whole class. How many good students are there in this class?
某班共有学生40人，其中三好学生占全班人数的(1/8)，这个班有三好学生多少人？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">40 * (1/8)</gadget>
<output>5</output>

<result>5</result>