When A and B are multiplied together, the number of A is 14. If the number of A increases by 12 and the number of B remains unchanged, then the product increases by 660. What is the original product of A and B?
甲、乙两数相乘，甲数是14，如果甲数增加12，乙数不变，那么积就增加660．甲、乙两数原来的积是多少？
<gadget id="calculator">660 / 12</gadget>
<output>55</output>

<gadget id="calculator">55 * 14</gadget>
<output>770</output>

<result>770</result>