diff --git a/AlgebraicDataflowArchitectureModel/src/experiment/PullExpriment.java b/AlgebraicDataflowArchitectureModel/src/experiment/PullExpriment.java
index 44f1aab..a49d700 100644
--- a/AlgebraicDataflowArchitectureModel/src/experiment/PullExpriment.java
+++ b/AlgebraicDataflowArchitectureModel/src/experiment/PullExpriment.java
@@ -12,9 +12,10 @@
 			long startTime = System.nanoTime();
 			main.purchase(100);
 			long endTime = System.nanoTime();
+			main.getHistory().clear();
 			times += endTime - startTime;
 		}
-		System.out.println("purchase:" + times / num);
+		System.out.println("purchase:" + (double)times / num);
 		times = (long) 0;
 		for(int i = 0;i<num;i++) {
 			long startTime = System.nanoTime();
@@ -22,7 +23,7 @@
 			long endTime = System.nanoTime();
 			times += endTime - startTime;
 		}
-		System.out.println("getHistory:" + times / num);
+		System.out.println("getHistory:" + (double)times / num);
 		times = (long) 0;
 		for(int i = 0;i<num;i++) {
 			long startTime = System.nanoTime();
@@ -30,7 +31,7 @@
 			long endTime = System.nanoTime();
 			times += endTime - startTime;
 		}
-		System.out.println("getPayment:" + times / num);
+		System.out.println("getPayment:" + (double)times / num);
 		times = (long) 0;
 		for(int i = 0;i<num;i++) {
 			long startTime = System.nanoTime();
@@ -38,7 +39,7 @@
 			long endTime = System.nanoTime();
 			times += endTime - startTime;
 		}
-		System.out.println("getPoints:" + times / num);
+		System.out.println("getPoints:" + (double)times / num);
 		times = (long) 0;
 		for(int i = 0;i<num;i++) {
 			long startTime = System.nanoTime();
@@ -46,6 +47,6 @@
 			long endTime = System.nanoTime();
 			times += endTime - startTime;
 		}
-		System.out.println("getTotal:" + times / num);
+		System.out.println("getTotal:" + (double)times / num);
 	}
 }