According to 500/125=4, 4+404=408, 408/4=204 form a comprehensive formula.
根据500/125=4，4+404=408，408/4=204组成一个综合算式是多少．
<gadget id="calculator">500 / 125</gadget>
<output>4</output>

<gadget id="calculator">4 + 404</gadget>
<output>408</output>

<gadget id="calculator">408 / 4</gadget>
<output>102</output>

<result>102</result>