According to 500/125=4, 4+308=312, 804-312=592 form a comprehensive formula.
根据500/125=4，4+308=312，804-312=592组成一个综合算式是多少．
<gadget id="calculator">500 / 125</gadget>
<output>4</output>

<gadget id="calculator">4 + 308</gadget>
<output>312</output>

<gadget id="calculator">804 - 312</gadget>
<output>492</output>

<result>492</result>