The current USD$/$EUR exchange rate is $1\mathrm{.}4000$ dollar per EUR. The $8$ month forward exchange rate is $1\mathrm{.}3850.$ The $8-$month USD interest rate is $6\mathrm{.}50\%$ per annum continuously compounded. Estimate the $8-$month EUR interest rate. Answer with $4$ digit decimal accuracy. Example: $10\mathrm{.}6567$