During the current year, Paxon Corporation's intangible assets account $($at cost$)$ increased $$37,500,$ which was the net result of purchasing new intangible assets costing $$200,000$ and selling other intangible assets costing $$162,500$ at a $$15,000$ loss. Also, its bonds payable account decreased $$100,000,$ the net result of issuing $$250,000$ of bonds at $$257,500$ and retiring bonds with a face value $($and book value$)$ of $$350,000$ at a $$22,500$ gain. What items and amounts appear in the $($a$)$ cash flows from investing activities and $($b$)$ cash flows from financing activities sections of its statement of cash flows?