It is known that 2*3=2*3*4, 4*5=4*5*6*7*8, ... Find the value of (4*4)/(3*3).
已知2*3=2*3*4，4*5=4*5*6*7*8，…求(4*4)/(3*3)的值．
<gadget id="calculator">4 * 5 * 6 * 7</gadget>
<output>840</output>

<gadget id="calculator">3 * 4 * 5</gadget>
<output>60</output>

<gadget id="calculator">840 / 60</gadget>
<output>14</output>

<result>14</result>