There are a total of 138 vegetarian mooncakes and meat mooncakes, which are distributed to students in Classes 1 and 2. Among the moon cakes (3/11) assigned by Class 6, the others are all meat; among the moon cakes (4/21) assigned by Class 6 2 are vegetarian, the rest are all meat. Question: Class 2 How many meat mooncakes are there in total?
现有素月饼和肉月饼共138个，分给六1，六2班的学生吃．六1班分到的月饼中(3/11)是素的，其他全是肉的；六2班分到的月饼中(4/21)是素的，其他全是肉的，问：两班分到的肉月饼共有多少个．
<gadget id="calculator">4 / 21</gadget>
<output>4/21 = around 0.190476</output>

<gadget id="calculator">1 - (4/21)</gadget>
<output>17/21 = around 0.809524</output>

<gadget id="calculator">105 * (17/21)</gadget>
<output>85</output>

<gadget id="calculator">3 / 11</gadget>
<output>3/11 = around 0.272727</output>

<gadget id="calculator">1 - (3/11)</gadget>
<output>8/11 = around 0.727273</output>

<gadget id="calculator">33 * (8/11)</gadget>
<output>24</output>

<gadget id="calculator">85 + 24</gadget>
<output>109</output>

<result>109</result>