diff --git a/nodes/prompt_math.py b/nodes/prompt_math.py
new file mode 100644
index 0000000..7d06277
--- /dev/null
+++ b/nodes/prompt_math.py
@@ -0,0 +1,129 @@
+import os
+
+# String to Number
+class String2Number:
+
+    @classmethod
+    def INPUT_TYPES(s):
+        return {
+            "required": {
+                "string": ("STRING", {
+                    "default": "0"
+                })
+            }
+        }
+
+   
+    RETURN_TYPES = ("STRING", "FLOAT", "INT", "BOOLEAN")
+    RETURN_NAMES = ("string", "float", "int", "bool")
+    FUNCTION = "convert"
+    CATEGORY = "PromptWrapper"
+
+    def convert(self, string=""):
+
+        try:
+            fvalue = float(string)
+        except ValueError as e:
+            print("error:", e)
+            fvalue = 0.0
+        except:
+            fvalue = 0.0
+
+        try:
+            ivalue = int(string)
+        except ValueError as e:
+            print("error:", e)
+            ivalue = 0
+        except:
+            ivalue = 0
+
+        try:
+            bvalue = bool(string)
+        except ValueError as e:
+            print("error:", e)
+            bvalue = False
+        except:
+            bvalue = False
+
+        return (string, fvalue, ivalue, bvalue)
+    
+
+
+# Number to String
+class Number2String:
+
+    @classmethod
+    def INPUT_TYPES(s):
+        return {
+            "required": {
+                "number": ("FLAOT|INT|BOOLEAN", {
+                    "default": "0"
+                })
+            }
+        }
+
+   
+    RETURN_TYPES = ("STRING",)
+    RETURN_NAMES = ("string",)
+    FUNCTION = "convert"
+    CATEGORY = "PromptWrapper"
+
+    def convert(self, number=0):
+
+        try:
+            string = str(number)
+        except ValueError as e:
+            print("error:", e)
+            string = ""
+        except:
+            string = ""
+
+        return (string, )
+    
+
+
+# Number to String
+class Equation2Value:
+
+    @classmethod
+    def INPUT_TYPES(s):
+        return {
+            "required": {
+                "value1": ("FLAOT|INT", {
+                    "default": "0"
+                }),
+                "operator": (["+", "-", "*", "/", "%"], {
+                    "default": "+"
+                }),
+                "value2": ("FLAOT|INT", {
+                    "default": "0"
+                })
+            }
+        }
+
+   
+    RETURN_TYPES = ("FLAOT|INT",)
+    RETURN_NAMES = ("=",)
+    FUNCTION = "calculate"
+    CATEGORY = "PromptWrapper"
+
+    def calculate(self, value1=0, operator="+", value2=0):
+
+        result = 0
+        try:
+            if operator == "+":
+                result = value1 + value2
+            elif operator == "-":
+                result = value1 - value2
+            elif operator == "*":
+                result = value1 * value2
+            elif operator == "/":
+                result = value1 / value2
+            elif operator == "%":
+                result = value1 % value2
+            else:
+                result = "error"
+        except:
+            result = "this is calculate error"
+
+        return (result, )
\ No newline at end of file
diff --git a/nodes/prompt_text.py b/nodes/prompt_text.py
index 3f5081c..71c3091 100644
--- a/nodes/prompt_text.py
+++ b/nodes/prompt_text.py
@@ -79,4 +79,5 @@ class RandomLinePrompt:
         if len(output_words) > 0:
             output_prompt = ", ".join(output_words)
 
-        return (output_prompt, )
\ No newline at end of file
+        return (output_prompt, )
+