According to calculations, each hectare of broad-leaved forest can release 3.65 tons of oxygen in 5 days. According to this calculation, how many tons of oxygen can each hectare of broad-leaved forest release in February 2008?
据测算，每公顷阔叶林5天可以放出3.65吨氧气，照这样计算，2008年2月，每公顷阔叶林可以放出多少吨氧气？
<gadget id="calculator">3.65 / 5</gadget>
<output>0.73</output>

<gadget id="calculator">0.73 * 29</gadget>
<output>21.17</output>

<result>21.17</result>