The value of `(0.5)^(3)+(0.4)^(3)-(0.9)^(3)`

The value of (-0.4)^(3) is

The value of (3/5)^0 is

If 1^(3) + 2^(3) +……. + 9^(3) =2025, then the approximate value of (0.11)^(3)+(0.22)^(3) +…..+ (0.99)^(3) is