How do you evaluate the expression n^3 when n=7 and when n= 0.4?

when $n = 7$ then ${n}^{3} = {7}^{3} = 7 \cdot 7 \cdot 7 = 343$
when $n = 0.4$ then ${n}^{3} = {0.4}^{3} = \left(0.4\right) \left(0.4\right) \left(0.4\right) = 0.064$
when $n = 7$ then ${n}^{3} = {7}^{3} = 7 \cdot 7 \cdot 7 = 343$
when $n = 0.4$ then ${n}^{3} = {0.4}^{3} = \left(0.4\right) \left(0.4\right) \left(0.4\right) = 0.064$