Set variable on submit

src/engine/gameManager/ForgeManager.java

@@ -122,6 +122,7 @@ public enum ForgeManager implements Runnable {
         workOrder.production_cost_total.putAll(workOrder.production_cost);
         workOrder.production_cost_total.forEach((key, value) -> workOrder.production_cost_total.compute(key, (k, v) -> v * workOrder.total_to_produce));
 
+        workOrder.total_produced = 0;
         workOrder.total_to_produce *= workOrder.slots_used;
 
         // Create in-memory items and add to collections