BOND PROBLEM:

$$1675$ bond matures in $16\mathrm{.}5$ years. Coupon rate $3\mathrm{.}39\%.$ Payment made biweekly. $R=4\mathrm{.}89\%.$ After $5-$years coupon rate becomes $22\%$ and payment made weekly. $R=13\%.$ What is your RATE OF RETURN over the years $($ROR$)?$