Snail A can travel 2.79 meters per hour, and snail B can travel 3.21 meters per hour. They crawl at the same time for 0.6 hours. How many meters have they traveled in total?
蜗牛甲每小时可行2.79米，蜗牛乙每小时可行3.21米，它们同时爬行0.6小时，共行了多少米？
<gadget id="calculator">2.79 + 3.21</gadget>
<output>6</output>

<gadget id="calculator">6 * 0.6</gadget>
<output>3.6</output>

<result>3.6</result>