A white calculator with a digital display showing 'RUNNER SERIES' and the time 'TUE 1 MAR 12:30' is placed on a white surface. The calculator has a numeric keypad with buttons labeled '0' to '9', 'ENTER', 'C', 'CE', 'M+', 'M-', 'MR', 'MC', 'MS', 'M+', 'M-', 'M+', 'M-', 'M+', 'M-', 'M+', 'M-', 'M+', 'M-', 'M+', 'M-', 'M+', 'M-', 'M+', 'M-', 'M+', 'M-',