The net price of an item after trade discounts of $40\mathrm{.}00\%,12\mathrm{.}00\%,$ and $6\mathrm{.}00\%$ is $$3,340\mathrm{.}00.$ Calculate the regular selling price of the good, round to the nearest cent. Calculate the equivalent discount rate of the series of discount rates. Round to two decimal places