There is 3.36 tons of coal in a canteen. It was originally planned to be burned in 14 days. After the stove is improved, 0.03 tons can be saved every day. How many days can the original coal be burned?
某食堂有3.36吨煤，原计划14天烧完，由于改进炉灶后，每天节约0.03吨，原有的煤可以烧多少天？
<gadget id="calculator">3.36 / 14</gadget>
<output>0.24</output>

<gadget id="calculator">0.24 - 0.03</gadget>
<output>0.21</output>

<gadget id="calculator">3.36 / 0.21</gadget>
<output>16</output>

<result>16</result>