The school dance team has 5 boys and 7 girls. How many boys account for the total number?
学校舞蹈队有男生5人，女生7人，男生占总人数的多少
<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<result>5/12 = around 0.416667</result>