Complex sentence: Also, it is difficult to predict the long term present value of a road, for example for 407 ETR was leased for 3 billion CDN and was subsequently valued at nearly 10 billion CDN.
Split into simpler sentences: Also, it is difficult to predict the long term present value of a road. For example, 407 ETR was leased for three billion CDN and was subsequently valued at nearly ten billion CDN.