The school brought a pile of sand and used (5/6) of the total to build the wall. How much of the total is left
学校运来一堆沙子，砌墙用总数的(5/6)，还剩总数的多少
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 - (5/6)</gadget>
<output>1/6 = around 0.166667</output>

<result>1/6 = around 0.166667</result>