### Instruction: Compute $7\left(\frac{1}{5}\right)^3$.### Response: So we want to compute $7\left(\frac{1}{5}\right)^3$.
Ok, well we know that $\frac{1}{5}=0.2$
Right, so we can substitute that in to get $7(0.2)^3$.
And we know that $0.2^3=0.008$.