A pile of coal uses up (2/3), which is exactly (8/7) tons. How many tons does this pile of coal have?
一堆煤用去(2/3)，正好是(8/7)吨，这堆煤共有多少吨？
<gadget id="calculator">8 / 7</gadget>
<output>8/7 = around 1.142857</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(8/7) / (2/3)</gadget>
<output>12/7 = around 1.714286</output>

<result>12/7 = around 1.714286</result>