If the nominal rate of interest is $8\mathrm{.}1\%$ and expected inflation is $2\mathrm{.}2\%,$ what is the real rate of interest? Enter your answer as a decimal and show four decimal places. For example, if your answer is $4\mathrm{.}25\%,$ you should enter $\mathrm{.}0425.$

If the nominal rate of interest is $8\mathrm{.}1\%$ and expected inflation is $2\mathrm{.}2\%,$ what is the real rate of interest? Enter your answer as a decimal and show four decimal places. For example, if your answer is $4\mathrm{.}25\%,$ you should enter $\mathrm{.}0425.$