When Wang Jun was doing an addition calculation problem, he regarded the 3 in the ones place of an addend as 8, and the 9 in the tens place as 5, and the result was 387. What should be the correct result?
王军在做一道加法计算题时，把一个加数个位上的3看成了8，十位上的9看成了5，结果得387，正确的结果应该是多少．
<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<gadget id="calculator">387 - 5</gadget>
<output>382</output>

<gadget id="calculator">90 - 50</gadget>
<output>40</output>

<gadget id="calculator">382 + 40</gadget>
<output>422</output>

<result>422</result>