Answer:
$328000
Step-by-step explanation:
Given: Cost of machine= $880000
Residual value= 60000
Estimated life= 10 years
Company use straight line depreciation method.
∴ Depreciation =

⇒ Depreciation=

∴ Depreciation=
per year.
Now, lets find the value of depreciation.
∵ Machine is sold on December 31, 2019, which is 6 years after it is installed.
∴ Depreciation value after 6 years=

Depreciation value after 6 years=

Next, finding the value of machine after 6 years of depreciation.
Value of machine after 6 years=

∴ Disposal value of machine after 6 years of usage is
, however, machine was sold at $225000.