Problem: Huashan Maternity Hospital serves an average of 105 mothers per week for their deliveries of babies.
The hospital operates 7 days a week.
Mothers stay an average of 3 days in the single rooms at the hospital.
Director of Huashan, Dr. Honggeng Zhou, wants to estimate the number of rooms needed, and has requested your help.
To help Dr. Zhou with an estimate of the number of rooms, please calculate and report, based on the information provided, the average number of mothers that are in Huashan Maternity Hospital at a time.