Property and Equipment (in thousands)	Feb. 3, 2019	Jan. 28, 2018
Land	$78,636	$83,048
Buildings	38,030	39,278
Leasehold improvements	362,571	301,449
Furniture and fixtures	103,733	91,778
Computer hardware	69,542	61,734
Computer software	230,689	173,997
Equipment and vehicles	15,009	14,806
Work in progress	74,271	51,260
Property and equipment, gross	972,481	817,350
Accumulated depreciation	(405,244)	(343,708)
Property and equipment, net	$567,237	$473,642

Depreciation expense related to property and equipment was $122.4 million and $108.00 million, for the years ended February 3, 2019, and January 28, 2018, respectively. b. Compute the estimated useful life of lululemons depreciable assets. Note: Round your answer to one decimal place (for example, enter 6.8 for 6.77555). c. Compute the estimated percent used up of lululemons depreciable assets. Note: Round percentage to one decimal place