saptabhih

saptabhiḥ — by seven (divisions); SB 1.13.52
saptabhiḥ — with the seven (layers); SB 3.29.43
saptabhiḥ — with seven; SB 4.27.16
saptabhiḥ — by the seven; SB 5.16.2
saptabhiḥ — by seven; SB 6.14.17
saptabhiḥ — seven; SB 6.16.37
triḥ-saptabhiḥ — seven multiplied by three (that is to say, twenty-one); SB 7.10.18