In the event of "Helping Children in Disaster Areas Return to School", Xiaoliang donated 5.6 yuan less than Xiaomei's twice, and they donated a total of 19.3 yuan. How much did Xiaomei donate?
在"帮助灾区儿童重返校园"活动中，小亮捐款数比小美的2倍少5.6元，他俩一共捐了19.3元．小美捐了多少元？
<gadget id="calculator">5.6 + 19.3</gadget>
<output>24.9</output>

<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">24.9 / 3</gadget>
<output>8.3</output>

<result>8.3</result>