Shown below is activity for one of the products of Denver Office Equipment:

January $1$ balance, $580$ units @ $$60$ per unit $$34,800$

Purchases:

January $10$: $580$ units @ $$65$ per unit

January $20$: $1,040$ units @ $$68$ per unit

Sales:

January $12$: $900$ units

January $28$: $780$ units

Required:

Compute the January $31$ ending inventory and cost of goods sold for January, assuming Denver uses LIFO and a periodic inventory system.