1) (-0.5^4 2^5)^3 / (-0.5^2 2^2)^3= (-0.0625 32)^3 / (0.25 4)^3= (-2)^3 / 1^3= -8
2) (-3^7 (2/3)^4)^3 / (-3^10 (2/3)^5)= (-2187 16/81)^3 / (-59049 32/243)= (-279936/81)^3 / (-1890753/243)= (-3456)^3 / (-7777)= -4084101.958
3) (-2 7/8^6 (-3/25)^3)^3 / (5 7/8^8 (-3/25)^4)^2= (-2 7/262144 -27/15625)^3 / (5 7/16777216 81/390625)^2= (378/4194304 27/15625)^3 / (7/83886080 81/390625)^2= (10125/1073741824)^3 / (567/671088640)^2= 103515625 / 1152921504606846976 / 320373207 / 4502839058909973632= 333776258682100 6345911035953604422935084026752= 0.0558641
1) (-0.5^4 2^5)^3 / (-0.5^2 2^2)^3
= (-0.0625 32)^3 / (0.25 4)^3
= (-2)^3 / 1^3
= -8
2) (-3^7 (2/3)^4)^3 / (-3^10 (2/3)^5)
= (-2187 16/81)^3 / (-59049 32/243)
= (-279936/81)^3 / (-1890753/243)
= (-3456)^3 / (-7777)
= -4084101.958
3) (-2 7/8^6 (-3/25)^3)^3 / (5 7/8^8 (-3/25)^4)^2
= (-2 7/262144 -27/15625)^3 / (5 7/16777216 81/390625)^2
= (378/4194304 27/15625)^3 / (7/83886080 81/390625)^2
= (10125/1073741824)^3 / (567/671088640)^2
= 103515625 / 1152921504606846976 / 320373207 / 4502839058909973632
= 333776258682100 6345911035953604422935084026752
= 0.0558641