A $4-$year real return bond $($par value $=$ $$1,000)$ has a coupon rate of $3\%$; inflation for years $1-4$ is $2\%,3\%,4\%$ and $6\%,$ respectively$-$ what is the bond$$s real return at maturity? with this formula: Pr$.=$ C $[(1-(1/(1+$r$)]+$FV$/(1+$r$)^$N