draw it out and show all the steps please

Homework Assignment Problem A shipping company must move 50 units of a product from Los Angles to New York (see the table) for transportation cost in dollars per unit between the company's various depots: blank entries in the table signify that shipment cannot be made directly between corresponding depots. Find the cheapest shipping schedule. 1. First solve the problem as a shortest-route problem 2. Second check your solution by solving it as a transshipment