Jiangnan Machinery Factory burned an average of 3 tons of coal per day in February 2004. How many tons of coal was burned in total this month?
江南机械厂2004年二月份平均每天烧煤3吨，这个月共烧煤多少吨？
<gadget id="calculator">29 * 3</gadget>
<output>87</output>

<result>87</result>