student missed the multiplication sign written between two three-digit numbers and regarded them as a six-digit number, and the six-digit number is exactly 7 times the original product. What is the sum of the two three-digit numbers? ?
某学生漏看了写在两个三位数之间的乘号，将它们当成了一个六位数，而该六位数恰好是原来乘积的7倍，这两个三位数之和是多少？
<gadget id="calculator">143 + 143</gadget>
<output>286</output>

<result>286</result>