A pile of coal was originally planned to burn 18 tons per day and burn out in 200 days. Due to the improvement of the stove, 16 tons are burned every day. How many days can this pile of coal actually burn?
一堆煤原计划每天烧18吨，200天烧完．由于改进炉灶，每天烧16吨．这堆煤实际可以烧多少天？
<gadget id="calculator">200 / 16</gadget>
<output>25/2 = around 12.5</output>

<gadget id="calculator">18 * (25/2)</gadget>
<output>225</output>

<result>225</result>