Ramón Silvestre Verea Aguiar y García (Curantes, 1833 – Buenos Aires, 1899) was a journalist, engineer, writer and inventor. He invented the first calculator that could multiply directly. He won a medal at the 1878 Universal Exhibition in Cuba. In New York, he founded the publication El Cronista and the magazine El Progreso. He was a defender of racial and gender equality, the abolition of slavery and freedom of expression. In 1985, he was exiled to Guatemala because of his opposition to US colonialist policy; he later moved to Buenos Aires, where he kept working as a journalist until he died.