There are 18 boys and 24 girls in Class A of the fifth grade, and the number of boys accounts for ((())/(())) of the whole class.
五年级甲班有男生18人，女生24人，男生人数占全班人数的((())/(()))．
<gadget id="calculator">18 + 24</gadget>
<output>42</output>

<gadget id="calculator">18 / 42</gadget>
<output>3/7 = around 0.428571</output>

<result>3/7 = around 0.428571</result>