Returns class instance from property multiplcation

src/property_utils/properties/property.py

@@ -213,7 +213,7 @@ def __mul__(self, other) -> "Property":
             <Property: 3000 (m^2) * K>
         """
         if isinstance(other, (float, int)):
-            return Property(self.value * other, self.unit)
+            return self.__class__(self.value * other, self.unit)
         if isinstance(other, Property):
             _other = self._unit_preconversion(other)
             return Property(

src/property_utils/tests/properties/test_property.py

@@ -1,4 +1,5 @@
 from unittest import TestSuite, TextTestRunner
+from operator import mul
 
 from unittest_extensions import args, TestCase
 
@@ -358,6 +359,19 @@ def test_with_zero_value_property(self):
         self.assert_result("0.0 (A^3) / (B^3)")
 
 
+class TestPropertyMultiplicationResultClass(TestProperty):
+    def subject(self, left, right):
+        return mul(left, right)
+
+    @args({"left": 2, "right": PropUnit1(10, Unit1.A)})
+    def test_left_multiplication_result_class(self):
+        self.assertResultIsInstance(PropUnit1)
+
+    @args({"left": PropUnit1(20, Unit1.A), "right": 2})
+    def test_right_multiplication_result_class(self):
+        self.assertResultIsInstance(PropUnit1)
+
+
 @add_to(property_test_suite, "__mul__")
 class TestCompositeDimensionPropertyUnitPreconversionMultiplication(TestProperty):