To download Ubuntu on Windows 7 32-bit, you can follow these steps:
1. Go to the official Ubuntu website (ubuntu.com).
2. Click on the "Download" tab.
3. Select the version of Ubuntu you want to download (make sure it is compatible with 32-bit).
4. Choose the appropriate download option for Windows.
5. Once the download is complete, run the installer and follow the on-screen instructions to install Ubuntu on your Windows 7 32-bit system.