Rayya Company purchases a machine for $$100,800$ on January $1,2021.$ Straight$-$line depreciation is taken each year for four years assuming a eight$-$year life and no salvage value. The machine is sold on July $1,2025,$ during its fifth year of service.

Prepare entries to record the partial year's depreciation on July $1,2025,$ and to record the sale under each separate situation. $(1)$ The machine is sold for $$50,400$ cash. $(2)$ The machine is sold for $$42,336$ cash.