(916 + 75) - 516 = 991 - 516 = 475
(55 + 394) + 6 = 449 + 6 = 455
635 - (87 + 213) = 635 - 300 = 335
41 + 42 + 43 + 44 + 45 + 46 + 47 + 48 + 49 = 355
(916 + 75) - 516 = 991 - 516 = 475
(55 + 394) + 6 = 449 + 6 = 455
635 - (87 + 213) = 635 - 300 = 335
41 + 42 + 43 + 44 + 45 + 46 + 47 + 48 + 49 = 355