Royal XE72 Calculator with 12 Digit Tiltable Display, Solar and Battery Power Markup, Percent & Square Root Keys Full Function Memory Auto Shut Off & Last Digit Erase Royal Machines XE72 Calculator with 12 Digit Tiltable Display and Solar and Battery Power Full Decimal System Floating & Round Up/Off or Cutoff Royal Machines XE72 Calculator with 12 Digit Tiltable Display and Solar and Battery Power Auto Shut Off & Last Digit Erase Full Decimal System Floating & Round Up/Off or Cutoff Full Function Memory Markup, Percent & Square Root Keys