A batch of sand is transported all (1/4) on the first day, the rest (5/6) on the second day, and the rest is shipped on the third day, and 8.5 tons are transported on the third day. How much is this batch of sand? Ton?
一批沙第一天运走全部的(1/4)，第二天运走余下的(5/6)，剩下的第三天运完，第三天运8.5吨，这批沙有多少吨？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(3/4) * (5/6)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 - (1/4) - (5/8)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">8.5 / (1/8)</gadget>
<output>68</output>

<result>68</result>