[BugFix] cast to int can throw when dealing with bigger totals

Author: Coding-Enthusiast

Src/FinderOuter/Services/ServiceBase.cs

@@ -73,7 +73,7 @@ protected string GetKeyPerSec(BigInteger total, double totalSecond)
             }
             else
             {
-                return $"k/s= {(int)total / totalSecond:n0}";
+                return $"k/s= {total / new BigInteger(totalSecond):n0}";
             }
         }