There are 48 students in the fifth grade, girls account for the whole class (3/8), how many boys are there?
五年级有48人，女生占全班的(3/8)，男生有多少人．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">48 * (3/8)</gadget>
<output>18</output>

<gadget id="calculator">48 - 18</gadget>
<output>30</output>

<result>30</result>