The most common way to type the "at" symbol (@) on a keyboard is to press and hold the Shift key, then press the number 2 key (Shift + 2). This works for most standard QWERTY keyboards. If using a Spanish keyboard, you may need to press Control + Alt + 2 or Control + Alt + @ key, or hold down the Alt key and type 64 on the numeric keypad. Alternatively, on Windows, you can use Alt codes: hold the Alt key, type 64 on the numeric keypad, then release the Alt key to get the @ symbol. For laptops without a numeric keypad, you can open the Character Map application, search for the "commercial at" symbol, copy it, and then paste it where needed. The exact key combination might vary with keyboard layout and language settings. Summary of methods:

• Press Shift + 2 (standard on QWERTY keyboards)
• On Spanish keyboards: Control + Alt + 2 or Alt + 64
• Use Alt code: hold Alt, type 64 on numeric keypad
• Use Character Map to copy and paste if needed

These methods provide ways to type the @ symbol on various keyboards and systems.