Suppose $1-$year T$-$bills currently yield $7\mathrm{.}00\%$ and the future inflation rate is expected to be constant at $3\mathrm{.}20\%$ per year. What is the real risk$-$free rate of return, r$*?$ Disregard any cross$-$product terms, i$.$e$.,$ if averaging is required, use the arithmetic average.