diff --git a/shimatta_kenkyusho/shimatta_modules/EngineeringNumberConverter.py b/shimatta_kenkyusho/shimatta_modules/EngineeringNumberConverter.py
index 42f7559..15ddde1 100644
--- a/shimatta_kenkyusho/shimatta_modules/EngineeringNumberConverter.py
+++ b/shimatta_kenkyusho/shimatta_modules/EngineeringNumberConverter.py
@@ -1,67 +1,67 @@
 
 class EngineeringNumberConverter():
 
-    prefixes = [
-        ('y', 1e-24),
-        ('z', 1e-21),
-        ('a', 1e-18),
-        ('f', 1e-15),
-        ('p', 1e-12),
-        ('n', 1e-9),
-        ('u', 1e-6),
-        ('m', 1e-3),
-        # We skip centi and dezi because no one really uses these besides for length measurements
-        ('', 1),
-        # We also skip h for hekto
-        ('k', 1e3),
-        ('M', 1e6),
-        ('G', 1e9),
-        ('T', 1e12),
-        ('P', 1e15),
-        ('E', 1e18),
-        ('Z', 1e21),
-        ('Y', 1e24),
-    ]
-    it_prefixes = [
-        ('', 1),
-        ('Ki', 1024),
-        ('Mi', 1024*1024),
-        ('Gi', 1024*1024*1024),
-        ('Ti', 1024*1024*1024*1024)
-    ]
-    
-    @classmethod
-    def number_to_engineering(c, number, it_unit = False):
-        """
-        Convert a number to engineering SI syntax with prefix.
-        This function will return a tuple of (new_number, prefix)
-        """
-        if it_unit:
-            used_prefixes = c.it_prefixes
-        else:
-            used_prefixes = c.prefixes
+	prefixes = [
+		('y', 1e-24),
+		('z', 1e-21),
+		('a', 1e-18),
+		('f', 1e-15),
+		('p', 1e-12),
+		('n', 1e-9),
+		('u', 1e-6),
+		('m', 1e-3),
+		# We skip centi and dezi because no one really uses these besides for length measurements
+		('', 1),
+		# We also skip h for hekto
+		('k', 1e3),
+		('M', 1e6),
+		('G', 1e9),
+		('T', 1e12),
+		('P', 1e15),
+		('E', 1e18),
+		('Z', 1e21),
+		('Y', 1e24),
+	]
+	it_prefixes = [
+		('', 1),
+		('Ki', 1024),
+		('Mi', 1024*1024),
+		('Gi', 1024*1024*1024),
+		('Ti', 1024*1024*1024*1024)
+	]
 
-        if (len(used_prefixes) < 2):
-            return (number / used_prefixes[0][1], used_prefixes[0])
-        
-        for i, (prefix, scale) in enumerate(used_prefixes[1:], 1):
-            if number < scale:
-                return (number / used_prefixes[i-1][1], used_prefixes[i-1][0])
-        
-        return (number / used_prefixes[-1][1], used_prefixes[-1][0])
+	@classmethod
+	def number_to_engineering(c, number, it_unit=False):
+		"""
+		Convert a number to engineering SI syntax with prefix.
+		This function will return a tuple of (new_number, prefix)
+		"""
+		if it_unit:
+			used_prefixes = c.it_prefixes
+		else:
+			used_prefixes = c.prefixes
 
-    @classmethod
-    def engineering_to_number(c, input):
-        cleaned_input = input.strip().replace(' ', '')
+		if (len(used_prefixes) < 2):
+			return (number / used_prefixes[0][1], used_prefixes[0])
 
-        selected_scaling = 1
+		for i, (prefix, scale) in enumerate(used_prefixes[1:], 1):
+			if number < scale:
+				return (number / used_prefixes[i-1][1], used_prefixes[i-1][0])
 
-        for (prefix, scale) in c.prefixes+c.it_prefixes:
-            if prefix == '':
-                continue
-            if cleaned_input.endswith(prefix):
-                cleaned_input = cleaned_input.replace(prefix, '')
-                selected_scaling = scale
-                break
-        
-        return float(cleaned_input) * selected_scaling
\ No newline at end of file
+		return (number / used_prefixes[-1][1], used_prefixes[-1][0])
+
+	@classmethod
+	def engineering_to_number(c, input):
+		cleaned_input = input.strip().replace(' ', '')
+
+		selected_scaling = 1
+
+		for (prefix, scale) in c.prefixes+c.it_prefixes:
+			if prefix == '':
+				continue
+			if cleaned_input.endswith(prefix):
+				cleaned_input = cleaned_input.replace(prefix, '')
+				selected_scaling = scale
+				break
+
+		return float(cleaned_input) * selected_scaling