49)³

Tính:
(3/7)²¹ : ( 1 - 40/49)³
3 . ( 2/3)³ - ( - 52/3)⁰ + 4/9
( 5/2)¹³ : (1/2 + 2)³
8 . (1/4)³ + (2/27)⁰ - 1/8