Alicia took notes, while she listened very closely to the professor. Then she turned to her Abacus. She pushed 9 beads to the right, from the top row, added another one, and then moved 4 beads to the right, added 3, then added another 3, then moved onto the next row where she moved 3 more beads to make six. She counted the total beads, and raised her hand "Is it 27 professor?" she replied.