Walsh Automobile Company fabricates automobiles. Each vehicle includes one airflow​ sensor, which is currently made inminushouse. Details of the airflow sensor fabrication are as​ follows: Volume 700 units per month Variable cost per unit $ 7 per unit Fixed costs $ 13 comma 000 per month A Japanese factory has offered to supply Walsh with readyminusmade units for a cost of $ 16 per sensor. Assume that​ Walsh's fixed costs could be reduced by $ 4 comma 000 if it outsources and that Walsh will not be able to use the excess capacity in any profitable manner. If Walsh decides to​ outsource, monthly operating income will​ ________.