When the little sloppy was doing a subtraction problem, he mistakenly wrote the subtrahend 726 as 120, and the difference he got was exactly 1000. What is the correct difference.
小马虎在做一道减法题时，把减数726错写成120，这时得到的差刚好是1000．正确的差是多少．
<gadget id="calculator">1_000 - 726</gadget>
<output>274</output>

<gadget id="calculator">120 + 274</gadget>
<output>394</output>

<result>394</result>