Problem $1$: Depreciation & Impairment

Flagg Corp purchase and placed into service $$3\mathrm{.}3$ million worth of virology testing equipment on March $31,2021.$ The equipment is expected to last $6$ years and$/$or $2$ million batches, and have a salvage value of $$600,000.$ Calculate the depreciation expense for $2021,2022,$ and $2023$ for the following methods:

$1\mathrm{.}1$: Straight$-$line.