Use the Webster method to apportion the artifacts. Determine whether it is necessary to modify the divisor. If so, indicate the value of the modified divisor.

Use the table below and the following information: In Wakanda, the domain of the Black Panther, King T'Challa, has six fortress cities. In Wakandan, the word "birnin" means "fortress city." King T'Challa has found 111 Vibranium artifacts that must be distributed among the fortress cities of Wakanda. He has decided to apportion the artifacts based on the number of residents of each birnin.

Fortress Cities Birnin Birnin Birnin Djata (D) T'Chaka (T) Zana (Z) Birnin S'Yan (S) Birnin Bashenga (B) Birnin Azzaria (A) Total Residents 26,000 57,000 27,000 18,000 64,000 45,000 237,000 Standard Quota 12.18 26.70 12.65 8.43 29.98 21.08 111