When Xia Ming was doing the addition formula, he wrote the addition of 260 as adding 200 to get 450. What is the correct result?
夏明在做加法算式时，把加260写成了加200，得450，正确的结果是多少
<gadget id="calculator">450 - 200</gadget>
<output>250</output>

<gadget id="calculator">250 + 260</gadget>
<output>510</output>

<result>510</result>