A car travels an average of 65.8 kilometers per hour. He drives for 2.8 hours in the morning and 4.6 hours in the afternoon. How many kilometers has the car traveled in total in a whole day? (retain two decimal places)
一辆汽车的平均每小时行驶65.8千米，他上午行驶了2.8小时，下午又行驶了4.6小时，这辆汽车全天共行驶了多少千米？(得数保留两位小数)
<gadget id="calculator">2.8 + 4.6</gadget>
<output>7.4</output>

<gadget id="calculator">65.8 * 7.4</gadget>
<output>486.92</output>

<result>486.92</result>