When Xiaohua calculated 1.39 plus a decimal, he mistakenly aligned the end of the number, and the result was 1.84. What should be the correct number?
小华在计算1.39加一个一位小数时，错误地把数的末尾对齐，结果得到1.84，正确的得数应该是多少
<gadget id="calculator">1.39 + 4.5</gadget>
<output>5.89</output>

<result>5.89</result>