What is the sum of the product of 706 and 78 plus 1680?
706与78的积加上1680，和是多少？
<gadget id="calculator">706 * 78</gadget>
<output>55_068</output>

<gadget id="calculator">55_068 + 1_680</gadget>
<output>56_748</output>

<result>56_748</result>