A megahertz is one million (or 106) hertz. See hertz, kilohertz (one thousand hertz), gigahertz[?] (109 hertz), terahertz[?] (1012 hertz), and petahertz[?] (1015 hertz).
... Stepan (Stiva) Oblonsky and his wife Darya (Dolly) caused by the former's unfaithfulness. In Moscow, Anna meets and secures the admiration of Count Vronsky to the jealously ...