If the inflation rate was $3\mathrm{.}00\%$ and the nominal interest rate was $4\mathrm{.}60\%$ over the last year, what was the real rate of interest over the last year? Disregard cross$-$product terms; that is$,$ if averaging is required, use the arithmetic average. Round intermediate calculations to four decimal places.

$1\mathrm{.}84\%$

$2\mathrm{.}00\%$

$1\mathrm{.}36\%$

$1\mathrm{.}60\%$