How many hours can I stream?

G     = 1,000,000,000
k     = 1,000
hours = (gigaBytesPerMonth * 8 * G) / (kbps * k) / 3600
69.4h = (5 * 8 * 1000000000) / (160 * 1000) / 3600

The table below shows approximate kbps (kilo-bits-per-second) that a stream takes. The service you use might vary.