Calculation: 321*654/987/654*987/321=how much.
计算：321*654/987/654*987/321=多少．
<gadget id="calculator">654 / 987 / 654</gadget>
<output>1/987 = around 0.001013</output>

<gadget id="calculator">987 / 321</gadget>
<output>329/107 = around 3.074766</output>

<gadget id="calculator">321 * (1/987) * (329/107)</gadget>
<output>1</output>

<result>1</result>