Trey Monson starts a merchandising business on December $1$ and enters into the following three inventory purchases. Monson uses a perpetual inventory system. Also, on December $15,$ Monson sells $15$ units for $$39$ each.

Purchases on December $710$ units @ $$25\mathrm{.}00$ cost

Purchases on December $1420$ units @ $$31\mathrm{.}00$ cost

Purchases on December $2115$ units @ $$33\mathrm{.}00$ cost$.$ Determine the costs assigned to ending inventory when costs are assigned based on the LIFO method.