(6/7) of a number is 10 more than (4/5) of 2.5, find this number.
一个数的(6/7)比2.5的(4/5)多10，求这个数．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">2.5 * (4/5)</gadget>
<output>2</output>

<gadget id="calculator">2 + 10</gadget>
<output>12</output>

<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">12 / (6/7)</gadget>
<output>14</output>

<result>14</result>