diff --git a/gamesrv/thirteen/scene.go b/gamesrv/thirteen/scene.go
index 1d658f5..55d90e0 100644
--- a/gamesrv/thirteen/scene.go
+++ b/gamesrv/thirteen/scene.go
@@ -1257,7 +1257,7 @@ func (this *SceneEx) CountBilled() {
 		for _, v := range this.players {
 			if v != nil && v.IsGameing() {
 				if v.totalScore > 0 {
-					v.gainCoin = int64(float64(v.totalScore) * float64(totalLoseScore) / float64(totalWinScore))
+					v.gainCoin = int64(float64(v.totalScore*totalLoseScore) / float64(totalWinScore))
 				} else if v.totalScore < 0 {
 					v.gainCoin = v.totalScore
 				}
@@ -1270,7 +1270,7 @@ func (this *SceneEx) CountBilled() {
 				if v.totalScore > 0 {
 					v.gainCoin = v.totalScore
 				} else if v.totalScore < 0 {
-					v.gainCoin = int64(float64(v.totalScore) * float64(totalLoseScore) / float64(totalWinScore))
+					v.gainCoin = int64(float64(v.totalScore*totalWinScore) / float64(totalLoseScore))
 				}
 			}
 		}