Joshua saved $$130$ at the end of every month for $5$ years in his bank account that earned $4\mathrm{.}70\%$ compounded monthly.

a$.$ What is the accumulated value of his savings at the end of the period?

$$8,609\mathrm{.}73$

$$8,773\mathrm{.}45$

$$74,992\mathrm{.}71$

$$973\mathrm{.}45$

b$.$ What is the interest earned over the period?

$$843\mathrm{.}45$

$$8,773\mathrm{.}45$

$$1,103\mathrm{.}45$

$$973\mathrm{.}45$