Calculation: (2001+2002*1999)/(2001*2002-2003)
计算：(2001+2002*1999)/(2001*2002-2003)
<gadget id="calculator">2_002 * 1_999</gadget>
<output>4_001_998</output>

<gadget id="calculator">2_001 + 4_001_998</gadget>
<output>4_003_999</output>

<gadget id="calculator">4_004 - 2_003</gadget>
<output>2_001</output>

<gadget id="calculator">4_001_998 + 2_001</gadget>
<output>4_003_999</output>

<gadget id="calculator">4_003_999 / 4_003_999</gadget>
<output>1</output>

<result>1</result>