0.008 ^ 120
0.008 = 8 * 10^-3
0.008 = 2^3 * 10^-3
(0.008)^120 = (2^3 * 10^-3)^120
(0.008)^120 = 2^360 * 10^-360
(0.008)^120 = 2348542582773833227889480596789337027375682548908319870707290971532209025114608443463698998384768703031934976 * 10^-360
(0.008)^120 = 2.348542582773833227889480596789337027375682548908319870707290971532209025114608443463698998384768703031934976 * 10^-252
= 0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002348542582773833227889480596789337027375682548908319870707290971532209025114608443463698998384768703031934976
or you could look at (0.008)^120 = (2^3 * 10^-3)^120
2^3 * 10^-3 = 2^3 / 10^3 = (2/10)^3 = (1/5)^3 = 5^-3
(0.008)^120 = (2^3 * 10^-3)^120
(0.008)^120 = (5^-3)^120
(0.008)^120 = 5^-360