Trust-Mart supermarket has a big sale. Wang Qiang took his younger sister to Taobao. Wang Qiang originally had 20 yuan. After giving his sister 6.5 yuan, the younger sister was still 1.3 yuan less than him. How much does my sister have now?
好又多超市大促销，王强带着妹妹一起去淘宝，王强原来有20元，给妹妹6.5元后，妹妹还比他少1.3元，现在妹妹有多少元？
<gadget id="calculator">20 - 6.5 - 1.3</gadget>
<output>12.2</output>

<result>12.2</result>