When two numbers are multiplied, if the multiplicand increases by 14 and the multiplier remains unchanged, the product increases by 84; if the multiplier increases by 14 and the multiplicand remains unchanged, the product increases by 168. What is the original product?
两数相乘，若被乘数增加14，乘数不变，则积增加84；若乘数增加14，被乘数不变，则积增加168．原来的积是多少？
<gadget id="calculator">84 / 14</gadget>
<output>6</output>

<gadget id="calculator">168 / 14</gadget>
<output>12</output>

<gadget id="calculator">6 * 12</gadget>
<output>72</output>

<result>72</result>