There are 123 students in the fifth grade of Jingyuan No. 3 Primary School, and 63 girls. How many percent of the boys are girls?
泾源三小五年级有学生123人，有女生63人，男生是女生的几分之几？
<gadget id="calculator">123 - 63</gadget>
<output>60</output>

<gadget id="calculator">60 / 63</gadget>
<output>20/21 = around 0.952381</output>

<result>20/21 = around 0.952381</result>