Jobs, Inc. has recently started the manufacture of Tri-Robo, a three-wheeled robot that can scan a home for fires and gas leaks and then transmit this information to a smartphone. The cost structure to manufacture 20,200 Tri-Robos is as follows. Cost Direct materials ($48 per robot) $969,600 Direct labor ($42 per robot) 848,400 Variable overhead ($7 per robot) 141,400 Allocated fixed overhead ($30 per robot) 606,000 Total $2,565,400 Jobs is approached by Tienh Inc., which offers to make Tri-Robo for $116 per unit or $2,343,200. Following are independent assumptions. (a1) Assume that $405,000 of the fixed overhead cost can be avoided. (Enter negative amounts using either a negative sign preceding the number e.g.-45 or parentheses e.g. (45).) Net Income Increase (Decrease) Make Buy Direct materials $ Direct labor Variable overhead Fixed overhead Purchase price Total annual cost