Ahouse is for sale at $36500. a down payment of $85000 is made and leaves a monthly mortgage payment of $2180. the annual tax bill is $3450 and annual heating costs are estimated to be $2000. telepjome and internet will cost $125 per month. the house is insured for 80% of its estimated value, which is $292000, at an annual premium of $3.85 per $1000. find the average monthly cost of running this house.