ἐπιδεξίως

From LSJ

ἴσα πάντα, ἴσων ἀμφοτέρων, ἰσάκις ἴσος → all are equal, both are equal, equal multiplied by equal

Source

Russian (Dvoretsky)

ἐπιδεξίως: ловко, искусно Polyb., Plut.