Xiao Liang is a little sloppy. When calculating decimal addition, he regarded one of the addends 3.6 as 36, and the result was 48.5. What should be the correct number?
小亮是个小马虎，在计算小数加法时，把其中一个加数3.6看成了36，结果得48.5．正确得数应该是多少？
<gadget id="calculator">48.5 - 36</gadget>
<output>12.5</output>

<gadget id="calculator">12.5 + 3.6</gadget>
<output>16.1</output>

<result>16.1</result>