def domul(a,b):
    return a*b
print domul(10, 123456789876543)
print domul(876543234567, 123456789876543)
print domul(-876543234567, 123456789876543)
print domul(-876543234567, -123456789876543)
print domul(876543234567, -123456789876543)
print domul(876543234567, 10)
print domul(876543234567, -10)