Calculation: ((490+687*492)/(493*687-197)).
计算：((490+687*492)/(493*687-197))．
<gadget id="calculator">687 * 492</gadget>
<output>338_004</output>

<gadget id="calculator">490 + 338_004</gadget>
<output>338_494</output>

<gadget id="calculator">493 * 687</gadget>
<output>338_691</output>

<gadget id="calculator">338_691 - 197</gadget>
<output>338_494</output>

<gadget id="calculator">338_494 / 338_494</gadget>
<output>1</output>

<result>1</result>