On Mother’s Day, Xiao Ming used his pocket money to buy a pair of gloves and a hat for his mother. A hat cost 13.5 yuan. A pair of gloves was 6.8 yuan cheaper than a hat. How much did it cost to buy a pair of gloves and a hat? ?
母亲节，小明用自己的零花钱给妈妈买了一副手套和一顶帽子，一顶帽子13.5元，一副手套比一顶帽子便宜6.8元，买一副手套和一顶帽子共需多少钱？
<gadget id="calculator">13.5 - 6.8</gadget>
<output>6.7</output>

<gadget id="calculator">6.7 + 13.5</gadget>
<output>20.2</output>

<result>20.2</result>