Mountain Springs Water Company has two departments, Purifying and Bottling. The Bottling Department received 68,410 liters from the Purifying Department. During the period, the Bottling Department completed 66,110 liters, including 2,920 liters of work in process at the beginning of the period. The ending work in process had 5,220 liters. How many liters were started and completed during the period?
fill in the blank 1 liters started and completed