on februaru 20 2016 genoa mining company incurred costs of 4,704,000 to acquire and prepare to extract an estiamted 4,800,000 tons of mineral depostits. in 2016 530,000 tons of ore were mined. at the beginning of 2017, genoa geologists estimated that 4,700,000 tons of ore still remained. in 2017 780,000 tons of ore were mined.

1-compute depletion for 2016 and 2017