△ represents a new operation symbol, and stipulates a△b=(a+b)/(ab), then: (72△56)△6=how many.
△表示一种新的运算符号，并且规定a△b=(a+b)/(a-b)，那么：(72△56)△6=多少．
<gadget id="calculator">72 + 56</gadget>
<output>128</output>

<gadget id="calculator">72 - 56</gadget>
<output>16</output>

<gadget id="calculator">128 / 16</gadget>
<output>8</output>

<gadget id="calculator">8 + 6</gadget>
<output>14</output>

<gadget id="calculator">8 - 6</gadget>
<output>2</output>

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

<result>7</result>