A pile of coal, 1/4 of the pile of coal will be burned in 6 days. According to this calculation, how many days can this pile of coal be burned? (Solve with ratio)
一堆煤，6天烧去这堆煤的(1/4)，照这样计算，这堆煤能烧多少天？(用比例解)
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">6 / (1/4)</gadget>
<output>24</output>

<result>24</result>