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Funny confused screaming, 3+3÷3=4 addition, division and subtraction equals design for mathematician and math lovers. Students and teachers. Great apparel for dad, mom, friend, sister, brother, son, daughter, aunt, uncle, coworker… Perfect present idea in birthday, teacher's day, mother's day, father's day, women's day, back to school, first day of school, 100 days of school...