What is the processor speed (mhz) for part number a80486dx4-75?
{'header': ['Processor Speed (MHz)', 'Input Clock (MHz)', 'Voltage Center (V)', 'Voltage Range (V)', 'Part Number', 'Clock Multiplier', 'S-Spec Number'], 'page_title': 'Intel DX4', 'page_id': '', 'types': ['real', 'text', 'text', 'text', 'text', 'text', 'text'], 'id': '1-15261-1', 'section_title': 'S-Specs', 'caption': 'S-Specs', 'rows': [['75', '25 X 3', '3.3', '3.1 - 3.6', 'FC80486DX4-75', '3X mode only', 'SK052, SX883'], ['100', '33 X 3', '3.3, 3.45', '3.1 - 3.6', 'FC80486DX4-100', '3X mode only', 'SX906'], ['100', '33 X 3 / 50 X 2', '3.45', '3.3 - 3.6', 'FC80486DX4-100', '3X or 2X mode', 'SX876'], ['100', '33 X 3 / 50 X 2', '3.3, 3.45', '3.1 - 3.6', 'FC80486DX4-100', '3X or 2X mode', 'SK053'], ['75', '25 X 3', '3.3', '3.1 - 3.6', 'A80486DX4-75', '3X mode only', 'SK047, SX884'], ['100', '33 X 3', '3.45', '3.3 - 3.6', 'A80486DX4-100', '3X mode only', 'SK051, SX900'], ['100', '33 X 3 / 50 X 2', '3.45', '3.3 - 3.6', 'A80486DX4-100', '3X or 2X mode', 'SX877'], ['100', '33 X 3 / 50 X 2', '3.3', '3.1 - 3.6', 'A80486DX4-100', '3X or 2X mode', 'SK050'], ['100', '33 X 3', '3.45', '3.3 - 3.6', 'A80486DX4WB-100', '3X mode only', 'SK096'], ['100', '33 X 3 / 50 X 2', '3.3', '3.1 - 3.6', 'A80486DX4WB-100', '3X or 2X mode', 'Limited availability'], ['75', '25 X 3', '3.3', '3.1 - 3.5', 'A80486DX4WB-75', '3X mode only', 'SK102'], ['100', '33 X 3 / 50 X 2', '3.3', '3.1 - 3.6', 'FC80486DX4WB-100', '3X or 2X mode', 'SK099']], 'name': 'table_15261_1'}