The total area of Ao'ao's house is 127.8 square meters, the sum of the areas of the three bedrooms is 48.9 square meters, and the sum of the areas of the bathroom, kitchen, balcony, etc. is 30.6 square meters. The rest is the living room, what is the area of the living room?
奥奥家房屋总面积是127.8平方米，3个卧室的面积和是48.9平方米，卫生间、厨房、阳台等的面积和是30.6平方米．其余的是客厅，客厅的面积是多少？
<gadget id="calculator">127.8 - 48.9 - 30.6</gadget>
<output>48.3</output>

<result>48.3</result>