<prompt> Mugore ra1977 akava mujachi wokutanga kuwana mari inopfuura 6 miriyoni pagore.  <response>: Chokwadika, shanduro yakaoma zvikuru yemutsara wacho ndeiyi Muna 1977 akava mujachi wokutanga kuhwina mari inopfuura 6 miriyoni mugore rimwe, uye muna 1978 akava mujachi muduku zvikurusa kuhwina U.S. Triple Crown. 