Upgrade of Castle

table, th, td { padding: 10px; border: 1px solid white; border-collapse: collapse; } Castle upgrade Level Building to upgrade Food Wood Iron Silver 25 University 62,390,628 17,422,289 12,242,689 2,366,135 26 Embassy 80,828,789 22,383,357 14,922,238 3,544,032 27 Storehouse 107,312,594 29,458,359 18,516,683 5,365,630 28 Barracks 142,465,655