Calculeaza, respectand ordinea efectuani operatiilor
2 3 * 7 * 1 9 5 =
3 02
1 9 x 8 + 1 7 x 7 =
5 7 x 4 - 6 9 x 2 =
6 8 x 9 + 3 x 4 5 =
8 0 0 - 2 x 4 x 6 3 = ---- ma ajutati va rog?​