Calculation: ((204+584*1991)/(1992*584-380))-(1/143).
计算：((204+584*1991)/(1992*584-380))-(1/143)．
<gadget id="calculator">584 * 1_991</gadget>
<output>1_162_744</output>

<gadget id="calculator">204 + 1_162_744</gadget>
<output>1_162_948</output>

<gadget id="calculator">1_992 * 584</gadget>
<output>1_163_328</output>

<gadget id="calculator">1_163_328 - 380</gadget>
<output>1_162_948</output>

<gadget id="calculator">1_162_948 / 1_162_948</gadget>
<output>1</output>

<gadget id="calculator">1 / 143</gadget>
<output>1/143 = around 0.006993</output>

<gadget id="calculator">1 - (1/143)</gadget>
<output>142/143 = around 0.993007</output>

<result>142/143 = around 0.993007</result>