M is employed as a marketing analyst and required by his employment contract to maintain a home office. His office occupies $10\%$ of the total space in his home. He works $3$ days a week in his home office and travels the remaining $2$ working days. He incurs the following expenses: New desk $$800,$ telephone landline monthly basic rate $(10\%$ of total$)$ $$200$; Internet $(10\%$ of total$)$ $$420$; Utilities $(10\%$ of total$)$ $$500$; House insurance $(10\%$ of total$)$ $$150$; Mortgage interest $(10\%$ of total$)$ $$900$; Property taxes $(10\%$ of total$)$ $$740$; Maintenance $(10\%$ of total$)$ $$100.$ The telephone is the only landline in the home and is shared by all family members. The internet is similarly shared by all members of the family. What is the maximum deduction from employment income for tax purposes available to M in the current year?