diff --git a/libs/Game_threads/calculations.py b/libs/Game_threads/calculations.py
index e2e7848..7cfb1a6 100644
--- a/libs/Game_threads/calculations.py
+++ b/libs/Game_threads/calculations.py
@@ -15,6 +15,15 @@ def P_C_M(A, B):  # stand for Physics Calculation multiple
     C = [0.0, 1, [], []]
     Float = A[0] * B[0]
     Int = A[1] + B[1]
+    if Float >= 10:
+        Float /= 10
+        Int += 1
+    elif Float <= 0.01:
+        Float *= 10
+        Int -= 1
+    else:
+        Float = float(Float)
+        Int = int(Int)
     Unit1 = A[2].extend(B[2])
     Unit2 = []
     for unit in B[3]:
diff --git a/libs/Game_threads/orbit_demo.py b/libs/Game_threads/orbit_demo.py
index 89a54d6..6233c6d 100644
--- a/libs/Game_threads/orbit_demo.py
+++ b/libs/Game_threads/orbit_demo.py
@@ -26,4 +26,4 @@ class Orbit_demo(threading.Thread):
         print("ha ?")
     
     def orbit_math(self):
-        mass = self.ship_info["mass"]
+        pass