Solve the equation: (2/7)x: (2/3)=6.
解方程：(2/7)x：(2/3)=6．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">6 * (2/3)</gadget>
<output>4</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">4 / (2/7)</gadget>
<output>14</output>

<result>14</result>