When Xiaohua was doing an addition, he mistook the 3 in the ones place of an addend as 8, and the 6 in the tens place as 9 by mistake. The result was 11.5. What is the correct answer?
小华在做一道加法时，把一个加数个位上的3错看成了8，把十分位上的6错看成了9，结果得到的和是11.5，正确的答案是多少．
<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<gadget id="calculator">0.9 - 0.6</gadget>
<output>0.3</output>

<gadget id="calculator">11.5 - 5 - 0.3</gadget>
<output>6.2</output>

<result>6.2</result>