The net price of an item after trade discounts of $36\mathrm{.}00\%,11\mathrm{.}50\%,$ and $5\mathrm{.}50\%$ is $$1,940\mathrm{.}00.$

a$.$ Calculate the regular selling price of the goods.

Round to the nearest cent

b$.$ Calculate the equivalent discount rate of the series of discount rates.

$\%$

Round to two decimal places