Xiao Ming calculated an addition. Due to carelessness, he regarded the 3 in the tens of thousands place as 5, the 9 in the hundreds place as 7, and the 6 in the ones place as 9. The calculated result is 94040. Please You help him correct his mistakes and figure out what the correct result should be.
小明算一道加法，由于粗心，他把一个加数万位上的3看成了5，百位上的9看成了7，个位上的6看成了9，算得的结果为94040，请你帮助他纠正错误，算出正确的结果应是多少．
<gadget id="calculator">50_000 - 30_000</gadget>
<output>20_000</output>

<gadget id="calculator">94_040 - 20_000</gadget>
<output>74_040</output>

<gadget id="calculator">9 - 6</gadget>
<output>3</output>

<gadget id="calculator">900 - 700 - 3</gadget>
<output>197</output>

<gadget id="calculator">74_040 + 197</gadget>
<output>74_237</output>

<result>74_237</result>