Michael Plumb's job shop has four work areas, A$,$ B$,$ C$,$ and D$.$ Distances in metres between centres of the work

areas are:

Workpieces moved, in $100$s of workpieces per week, between pairs of work areas, are:

It costs Michael $$3$ to move $1$ work piece $1$ metre. What is the weekly total material handling cost of the layout?

The weekly total material handling cost of the layout is $ $($enter your response as a whole number$).$