$$676+900-2 \times 26 \times 30 \times 63/65$$
$64$
$$1576-\frac{2\times 26\times 30\times 63}{65}$$
$$1576-\frac{52\times 30\times 63}{65}$$
$$1576-\frac{1560\times 63}{65}$$
$$1576-\frac{98280}{65}$$
$$1576-1512$$
$$64$$
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$2^{6}$