Collins Title Insurance Co$.$ has a staff of $4$ each working $8$ hours per day for a payroll cost of $$640$ per day

Overhead costs are $$400$ per day

Collins processes and closes on $8$ titles per day.

The new computerized system allows them to close on $14$ titles per day. The staff, their work hours and pay stay the same. The new Overhead is $$800$ per day. Has the Multifactor Productivity increased? If so$,$ by how much?