The Persians and the Greeks were unable to resist the enthusiasm that Islam brings as both of these countries were in a disastrous war. This was one of the reasons why the Islamic world expanded so much.
One reason why Islam expanded so much by 656 was because of Mohammed.
5000
656 = 656/1 in fraction
656 when expressed as a fraction will be 656/1000 and when simplified is 82/125.
656
656 + 46645 = 47,301
656 + 662 = 1,318
82
456 + 656 = 1,112
8.2
17.2632
1 foot = 12 inches so 656 ft = 656*12 = 7872 inches.
16 oz = 1 lb so 656 oz = 656/16 = 41 lbs