In 786*3□2=27□□72, what is the sum of the multiplicand, multiplier and product?
786*3□2=27□□72中，被乘数、乘数、积，这三个数和是多少．
<gadget id="calculator">786 + 352 + 726_672</gadget>
<output>727_810</output>

<result>727_810</result>