A pile of coal weighs 960 tons. After being transported twice, there are 680 tons left. It is known that (1/8) of the total number is removed in the first time, what fraction of the total number is removed in the second time?
一堆煤重960吨，运了两次后，还剩680吨．已知第一次运走总数的(1/8)，第二次运走总数的几分之几？
<gadget id="calculator">960 - 680</gadget>
<output>280</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">960 * (1/8)</gadget>
<output>120</output>

<gadget id="calculator">280 - 120</gadget>
<output>160</output>

<gadget id="calculator">160 / 960</gadget>
<output>1/6 = around 0.166667</output>

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