At 8:02 on April 20, 2013, an earthquake occurred in Lushan County, Ya'an City, Sichuan Province. In the donation activity for the disaster area, Xiao Ming donated 23.5 yuan, and Xiaofang donated 2.5 yuan less than Xiao Ming. The two of them How much did you donate in total?
2013年4月20日8时02分四川省雅安市芦山县发生地震，在为灾区献爱心的捐款活动中，小明捐了23.5元，小芳捐的钱数比小明少2.5元，他们两人共捐款多少元？
<gadget id="calculator">23.5 - 2.5</gadget>
<output>21</output>

<gadget id="calculator">21 + 23.5</gadget>
<output>44.5</output>

<result>44.5</result>