TABLE $9\mathrm{.}3$ Frosty Machines Transshipment Data

$\backslash$table$[[,$TO$],[$FROM$,$CHICAGO,BUFFALO,$\backslash$table$[[$NEW YORK$],[$CITY$]],$PHILADELPHIA,ST$.$ LOUIS,SUPPLY,$],[$Toronto$,$$$4,$$$7,-,-,-,800,],[$Detroit$,$$$5,$$$7,-,-,-,700,],[$Chicago$,-,-,$$$6,$$$4,$$$5,-,],[$Buffalo$,-,-,$$$2,$$$3,$$$4,-,],[$Demand$,-,-,450,350,300,,]]$

Minimize transportation costs associated with shipping snow blowers subject to demands and supplies