(0.2)^2013*5^2014*(2/5)^2015*(-5/2)^2016
＝﹙0.2×5﹚^2013×5×[2/5×﹙﹣2/5﹚]^2015×﹙﹣5/2﹚
＝1×5×﹙﹣1﹚×﹙﹣5/2﹚
＝25/2.