$$256+\overline{16+2}\div\overline{18\div9}\times2$$
$274$
$$256+\frac{conjugate(18)}{conjugate(\frac{18}{9})}\times 2$$
$$256+\frac{18}{conjugate(\frac{18}{9})}\times 2$$
$$256+\frac{18}{conjugate(2)}\times 2$$
$$256+\frac{18}{2}\times 2$$
$$256+9\times 2$$
$$256+18$$
$$274$$
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$$Re(256+\frac{conjugate(18)}{conjugate(\frac{18}{9})}\times 2)$$
$$Re(256+\frac{18}{conjugate(\frac{18}{9})}\times 2)$$
$$Re(256+\frac{18}{conjugate(2)}\times 2)$$
$$Re(256+\frac{18}{2}\times 2)$$
$$Re(256+9\times 2)$$
$$Re(256+18)$$
$$Re(274)$$
