David is a college professor who does some consulting work on the side. He uses $25\%$ of his home exclusively for the consulting practice. He is single and $63$ years old. His AGI $($without consideration of consulting income$)$ is $$44,750.$ Other information follows:

Income from consulting business$ $4,500$Consulting expenses other than home office$1,900$Total costs relating to home:$$Interest and taxes$6,800$Utilities$1,700$Maintenance and repairs$550$Depreciation $($business part only$)2,000$

Required:

Calculate David$$s AGI.