A pile of coal is used up (1/3), exactly (1/3) ton is used up. How many tons does this pile of coal weigh?
一堆煤用去(1/3)，正好用去(1/3)吨．这堆煤重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) / (1/3)</gadget>
<output>1</output>

<result>1</result>