In: Math
A website has the following policy for creating a password:
• Passwords must be exactly 8 characters in length.
• Passwords must include at least one letter (a-z, A-Z) or supported special character (@, #, $ only). All letters are case-sensitive.
• Passwords must include at least one number (0-9).
• Passwords cannot contain spaces or unsupported special characters
According to this policy, how many possible passwords are available? (Round to the nearest trillion)