Computer network or wireless please

anyone please can give me an idea about how to solve this problem

Assume that DVDs can be both read and written at

1.33x 108 bits/sec. We have 200 GBytes of backup data to send to the central office.COLOR=#000000 How many hours will it take to move the backup data onto DVDs [/color]

COLOR=#000000 Assume that it takes as long to read the data at the central office as it did to write it at the branch office. Also assume that it takes 24 hours to send the data via Federal Express overnight service. How many hours total time will it take to transfer 200 GBytes to the central office? [/color]