In the first semester of the fourth grade of the school, the number of boys accounted for the whole grade (11/20). At the beginning of this semester, 6 boys were transferred, and 6 girls were transferred. At this time, the number of girls accounted for the whole grade (19/40). How many boys are there?
学校四年级上学期男生人数占全年级的(11/20)，本学期初转走6名男生，又转来6名女生，这时女生人数占全年级人数的(19/40)，该年级现在共有多少男生？
<gadget id="calculator">11 / 20</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">19 / 40</gadget>
<output>19/40 = around 0.475</output>

<gadget id="calculator">1 - (19/40)</gadget>
<output>21/40 = around 0.525</output>

<gadget id="calculator">(11/20) - (21/40)</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">6 / (1/40)</gadget>
<output>240</output>

<gadget id="calculator">240 * (11/20)</gadget>
<output>132</output>

<gadget id="calculator">132 - 6</gadget>
<output>126</output>

<result>126</result>