When adding two numbers, Xiao Ming made a mistake and subtracted them. The result is 8.6, which is 10.4 less than the correct answer. What is the larger number among the original numbers?
两个数相加，小明错算成相减了，结果得8.6，比正确答案少10.4，原数中较大数是多少．
<gadget id="calculator">8.6 + 10.4 + 8.6</gadget>
<output>27.6</output>

<gadget id="calculator">27.6 / 2</gadget>
<output>13.8</output>

<result>13.8</result>