The number A (3/7) is the number B (9/11), the number C is half of the number A, and the number B is 2 greater than the number C. What is the number B?
甲数的(3/7)是乙数的(9/11)，丙数是甲数的一半，乙数比丙数大2，则乙数是多少．
<gadget id="calculator">9 / 11</gadget>
<output>9/11 = around 0.818182</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">(9/11) / (3/7)</gadget>
<output>21/11 = around 1.909091</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(21/11) * (1/2)</gadget>
<output>21/22 = around 0.954545</output>

<gadget id="calculator">1 - (21/22)</gadget>
<output>1/22 = around 0.045455</output>

<gadget id="calculator">2 / (1/22)</gadget>
<output>44</output>

<result>44</result>