When Xiaoqiao calculates, she regards the 8 in the hundreds digit as 3, and the 6 in the tens digit in the other as 9. The calculated sum is 530. What is the correct sum?
小巧在计算时，把一个加数百位上的8看成3，把另一个加数十位上的6看成9，计算得到的和是530，正确的和应该是多少？
<gadget id="calculator">90 - 60</gadget>
<output>30</output>

<gadget id="calculator">530 - 30</gadget>
<output>500</output>

<gadget id="calculator">800 - 300</gadget>
<output>500</output>

<gadget id="calculator">500 + 500</gadget>
<output>1_000</output>

<result>1_000</result>