diff --git a/libs/P_C.py b/libs/P_C.py
index 6e26591..9644a5a 100644
--- a/libs/P_C.py
+++ b/libs/P_C.py
@@ -7,49 +7,41 @@ import libs
 import math
 
 
-def P_C_M(A, B):  # stand for Scientific notation multiple
+def S_C_float_check(SC):  # stand for Scientific notation's float check\
     """
     formats:
-    A & B list format:docs.basic_config.json:basic_number
+    SC list format:docs.basic_config.json:basic_number"""
+    while SC[0] >= 10:
+        SC[0] /= 10
+        SC[1] += 1
+    while SC[0] < 1:
+        SC[0] *= 10
+        SC[1] -= 1
+
+
+def S_N_M(A, B):  # stand for Scientific notation multiple
     """
-    C = [0.0, 1, [], []]
-    Float = float(A[0] * B[0])
-    Int = int(A[1] + B[1])
-    if Float >= 10:
-        Float /= 10
-        Int += 1
-    elif Float <= 1:
-        Float *= 10
-        Int -= 1
-    else:
-        pass
+    formats:
+    A & B list format:docs.basic_config.json:basic_number"""
+    C = [float(A[0] * B[0]), int(A[1] + B[1])]
+    S_C_float_check(C)
     Unit1, Unit2 = A[2] + B[2], A[3] + B[3]
     if Unit1 == None:
         Unit1 = []
     libs.tools.D_C(Unit1, Unit2)
-    C = [Float, Int, Unit1, Unit2]
+    C += [Unit1, Unit2]
     return C
 
 
-def P_C_D(A, B):  # stand for Physics Calculation divide
+def S_N_D(A, B):  # stand for Scientific notation divide
     """
     formats:
-    A & B list format:docs.basic_config.json:basic_number
-    """
-    C = [0.0, 1, [], []]
-    Float = float(A[0] / B[0])
-    Int = int(A[1] - B[1])
-    if Float >= 10:
-        Float /= 10
-        Int += 1
-    elif Float <= 0.01:
-        Float *= 10
-        Int -= 1
-    else:
-        pass
+    A & B list format:docs.basic_config.json:basic_number"""
+    C = [float(A[0] / B[0]), int(A[1] - B[1])]
+    S_C_float_check(C)
     Unit1, Unit2 = A[2] + B[3], A[3] + B[2]
     if Unit1 == None:
         Unit1 = []
     libs.tools.D_C(Unit1, Unit2)
-    C = [Float, Int, Unit1, Unit2]
+    C += [Unit1, Unit2]
     return C
diff --git a/libs/tools.py b/libs/tools.py
index b886a80..1c3bbe3 100644
--- a/libs/tools.py
+++ b/libs/tools.py
@@ -28,6 +28,3 @@ def D_C(listA, listB): # stand for Duplicate check
     listA.sort()
     listB.sort()
     return
-
-def S_C_float_check(SC): # stand for Scientific notation's float check
-    pass
\ No newline at end of file
diff --git a/test.py b/test.py
index 01d9ff6..e64057b 100644
--- a/test.py
+++ b/test.py
@@ -12,9 +12,9 @@ B = [0.245, -7, ["N", "kg"], ["m", "s"]]
 print("A = " , A)
 print("B = " , B)
 
-C = libs.P_C.P_C_M(A, B)
-D = libs.P_C.P_C_D(A, B)
-E = libs.P_C.P_C_D(C, B)
+C = libs.P_C.S_N_M(A, B)
+D = libs.P_C.S_N_D(A, B)
+E = libs.P_C.S_N_D(C, B)
 
 print("A × B = " , C)
 print("A ÷ B = " , D)