There is a pile of coal in a certain factory. It was originally planned to burn 0.75 tons per day, which can be burned for 14 days. After the improvement of the stove, it actually burnt for 6 more days, how many tons can be actually saved per day compared with the original one?
某工厂有一堆煤，原计划每天烧0.75吨，可以烧14天．由于改进炉灶后，实际多烧了6天，求实际每天比原来每天节约多少吨？
<gadget id="calculator">14 + 6</gadget>
<output>20</output>

<gadget id="calculator">14 / 20</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">0.75 * (7/10)</gadget>
<output>0.525</output>

<gadget id="calculator">0.75 - 0.525</gadget>
<output>0.225</output>

<result>0.225</result>