Calculation: ((1993*1994-1)/(1993+1992*1994)).
计算：((1993*1994-1)/(1993+1992*1994))．
<gadget id="calculator">1_993 * 1_994</gadget>
<output>3_974_042</output>

<gadget id="calculator">3_974_042 - 1</gadget>
<output>3_974_041</output>

<gadget id="calculator">1_992 * 1_994</gadget>
<output>3_972_048</output>

<gadget id="calculator">1_993 + 3_972_048</gadget>
<output>3_974_041</output>

<gadget id="calculator">3_974_041 / 3_974_041</gadget>
<output>1</output>

<result>1</result>