<PackageReference Include="System.Drawing.Common" Version="11.0.0-preview.2.26159.112" />

Windows.Win32.Foundation.DECIMAL

struct DECIMAL
The DECIMAL structure represents a decimal data type that provides a sign and scale for a number.
namespace Windows.Win32.Foundation { internal struct DECIMAL { public decimal ToDecimal(); public DECIMAL(decimal value); public static implicit operator decimal(DECIMAL value); public static implicit operator DECIMAL(decimal value); } }