// PRE DEFINED VALUES
	   
	   var workdays = '255';
	   var fuelprice = '1.50';
	   var GCR_Discount = '0.02';
	
       // USER INPUT
	    	
		var active_vehicles_in_fleet = $('#input-1').val();  
		var average_hourly_driver_wage_including_benefits = $('#input-2').val();
		var average_refueling_volume_per_vehicle_litres = $('#input-3').val();
	
	   // USER OUTPUT
	   	
	  	var annual_saved_labour_costs = active_vehicles_in_fleet * average_hourly_driver_wage_including_benefits * 30 * 252;
	  	var annual_revenue_value_of_saved_labour = annual_saved_labour_costs * 4;
	  	var annual_fuel_savings = active_vehicles_in_fleet * 2 * 1.30 * 252 *;
	  	var combined_estimated_annual_fuel_and_labour_savings = annual_fuel_savings + annual_revenue_value_of_saved_labour;
	  	var current_total_estimated_fuel_and_labour_costs = active_vehicles_in_fleet * average_refueling_volume_per_vehicle_litres * 1.30 * 252 + active_vehicles_in_fleet * average_hourly_driver_wage_including_benefits * 252;
	  	var total_estimated_fuel_and_labour_costs_savings_percentage = combined_estimated_annual_fuel_and_labour_savings / current_total_estimated_fuel_and_labour_costs;