need a answer

In 2018, Close Co. purchased a bus for 517257. The company expects the bus to last for 15 years and should travel about 359833 kilometres (kms). It is expected that the bus will be sold at an auction for $30,000 in the end. During 2018 the bus was used for 30,000 kms. Calculate the depreciation expense for the machine 2018 using double declining balance method