(1 2/3)³ * (3/5)² + (21,36 - 20,4) : 0,06 - 16 16/21 = 19/21
1) (1 2/3)³ * (3/5)² = 125/27 * 9/25 = 5/3 * 1/1 = 5/3
2) 21,36-20,4 = 0,96
3) 0,96 : 0,06 = 16
4) 5/3 + 16/1 = 5/3 + 48/3 = 53/3
5) 53/3 - 16 16/21 = 53/3 - 352/21 = 371/21 - 352/21 = 19/21