In a subtraction formula, if the sum of the subtrahend, the minuend and the difference is 256, what is the minuend?
在一个减法算式中，减数、被减数、差三者的和为256，则被减数为多少．
<gadget id="calculator">256 / 2</gadget>
<output>128</output>

<result>128</result>