A research station in Antarctica needs to transmit a meteorological dataset of size 4.5 GiB4.5 \text{ GiB}4.5 GiB to a university server. The satellite uplink connection operates at a transmission speed of 15 Mbps15 \text{ Mbps}15 Mbps.
Construct an expression to show the time, in seconds, required to complete this transmission.
You do not have to perform the calculation.