When Xiaohong calculated 400-(270+□/30), she made a mistake in the order of the distance calculations in the brackets. He first calculated the sum of 270+□, and the result was 390. What is the correct result of this equation?
小红在计算400-(270+□/30)时，把括号里的远算顺序搞错了，他先算270+□的和，结果得390．这道算式的正确结果是多少？
<gadget id="calculator">400 - 390</gadget>
<output>10</output>

<gadget id="calculator">10 * 30</gadget>
<output>300</output>

<gadget id="calculator">300 - 270</gadget>
<output>30</output>

<gadget id="calculator">30 / 30</gadget>
<output>1</output>

<gadget id="calculator">270 + 1</gadget>
<output>271</output>

<gadget id="calculator">400 - 271</gadget>
<output>129</output>

<result>129</result>