The weight of stone cladding from a large shipment averages 1.5 kg with a standard deviation of 0.162 kg.

The weight of stone cladding from a large shipment averages 1.5 kg with a standard deviation of 0.162 kg. If these weights are normally distributed, what percent of these cladding would be expected to weigh between 1.5 kg and 1.8 kg?