There are 49 students in the fifth grade, including 27 girls. How many boys account for the total number of students in the class?
五年级有学生49人，其中有女生27人，男生占全班总人数多少．
<gadget id="calculator">49 - 27</gadget>
<output>22</output>

<gadget id="calculator">22 / 49</gadget>
<output>22/49 = around 0.44898</output>

<result>22/49 = around 0.44898</result>