In a division formula, the product of the divisor and the quotient plus the dividend is 21.6, what is the dividend.
在一个除法算式里，除数与商的乘积，再加上被除数得数是21.6，被除数是多少．
<gadget id="calculator">21.6 / 2</gadget>
<output>10.8</output>

<result>10.8</result>