According to 987/329=3, 3+405=408 form a comprehensive formula.
根据987/329=3，3+405=408组成一个综合算式是多少．
<gadget id="calculator">987 / 329</gadget>
<output>3</output>

<gadget id="calculator">3 + 405</gadget>
<output>408</output>

<result>408</result>