The dividend of a division with remainder format is 24, the quotient and remainder are both 4, what is the divisor
一道有余数除法版式的被除数是24，商和余数都是4，除数是多少
<gadget id="calculator">24 - 4</gadget>
<output>20</output>

<gadget id="calculator">20 / 4</gadget>
<output>5</output>

<result>5</result>