Vă rog, ajutor rapid!

(5¹³)³:125¹²=
(3³⁸×9⁴²):81³⁰=
(7¹⁰)⁵:(7×7¹²×7¹⁸)=
[(5⁴)⁵]³:(5×5¹⁵)³= ​