Use the following company information to calculate net cash provided or used by investing activities. (a) Long-term investments were sold for $42,500 cash, yielding a gain of $20,450. (b) Paid $63,500 cash for new machinery. (c) Sold land costing $32,300 for $36,600 cash, yielding a $4,300 gain. (d) Equipment with a book value of $178,000 and an original cost of $303,000 was sold at a loss of $18,500