When Xiao Ming added a decimal to 2.68, he mistakenly aligned the end of the number, and the result was 5.27. What should be the correct number?
小明在计算2.68加上一个一位小数时，由于错误地把数的末尾对齐，结果得到5.27．正确的得数应当是多少？
<gadget id="calculator">2.68 + 25.9</gadget>
<output>28.58</output>

<result>28.58</result>