If one bracket covers 10–14 camels, the intermediate numbers 11, 12, 13 and 14 do not independently increase the dues. Likewise, one bint makhad remains due from 25–35, and two hiqqahs from 91–120.
This is the exemption of the increments between prescribed thresholds. It does not eliminate zakat on the herd; it means the amount due remains unchanged until the next threshold.