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Japanese traditional abacus soroban on white background.
Japanese traditional abacus soroban isolated on white background
Japanese traditional abacus soroban isolated on white background.
Child boy with Japanese traditional abacus soroban on white background
Little boy doing math homework, calculating with abacus (soroban)
boy doing his mental arithmetic homework with father sitting next to him at the kitchen table
cute little caucasian boy doing mental arithmetic homework with father next to him at the table
cute little caucasian boy doing his mental arithmetic homework with father sitting next to him at
