解:已知被除数比除数大252,商=7,得被除数=除数+252,且被除数÷除数=商,得(除数+252)÷除数=7除数+252=除数×7除数×7-除数=252除数×6=252除数=252÷6除数=42被除数=除数+252=42+252=294答:被除数是294,除数是42.