A pile of coal is transported, and (1/6) of this pile of coal is transported on the first day, and 63 tons more are transported on the second day than on the first day. At this time, the ratio of the coal transported to the remaining coal is 6: 5. How many tons is this pile of coal?
运一堆煤，第一天运走了这堆煤的(1/6)，第二天比第一天多运63吨，这时运走的煤与剩下煤的吨数比为6：5．这堆煤共有多少吨？
<gadget id="calculator">6 + 5</gadget>
<output>11</output>

<gadget id="calculator">6 / 11</gadget>
<output>6/11 = around 0.545455</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(6/11) - (1/6) - (1/6)</gadget>
<output>7/33 = around 0.212121</output>

<gadget id="calculator">63 / (7/33)</gadget>
<output>297</output>

<result>297</result>