Draw a cash flow diagram depicting the net cash flows associated with the purchase, operation, and disposition of a synthetic rubber-blending machine. The cash flow components are shown below. Your cash flow diagram should have only one arrow at any given time period, reflecting the net of that period's cash flows. At t = 0, purchase blender for $42000 At t = 0, install at cost of $10000 At t = 1, savings generated by blender is $5000 At t = 1, maintenance costs of $1000 At t = 2, savings generated by blender is $10000 At t = 3, savings generated by blender is $11,918 At t = 3, maintenance costs of $2000 At t = 4, 5, 6, 7 savings generated are $13,865 and maintenance is $2000 At t = 7, the blender is sold for $4,761 At t = 7, the blender removal costs are $1000 What is the summation of cash flows at periods 3, 5, and 7? State your answer with NO decimal places