???, 18.58p ?? 2461.82…?·?? ?? 18.1? ?? 1247.5? ??

??? ?? = 6? ???? ? ???(2480.40)?? 18.58???(0.75%) ??? 2461.82? ????.

??? ??? ? ???(766.79)?? 3.13???(0.41%) ?? 763.66? ??? ????.

?? ?????? ?·?? ??? ? ???(1229.4?)?? 18.1? ??? 1247.5?? ????.

[??=???]