Operation,Primary measure,Companion measure
Seven ordinary cells,7 × 70 = 490,7 × 72 = 504
One extension of a whole week,490 + 110 = 600,504 + 110 = 614
Extend each of its seven cells,7 × (70 + 110) = 1260,7 × (72 + 110) = 1274
Corresponding calendar numerical form,1260 = 3.5 × 360,1274 = 3.5 × 364