Please answer and explain

Crystal Company summarized the following transactions pertaining to the patent: Prepare the amortization schedule. On January 1,2X1. Toxic Company purchased a patent for P7,140,000. The patent is being amortized over the remaining legal life of 15 years. During 2X4, the entity determined that the economic benefits would not last longer than 10 years from the date of acquisition. Prepare the amortization schedule