Example Problem Length Contraction super train

A very fast train with a proper length of 500m is passing through a tunnel that is 200m long according to the measurement of the people on the ground. The trains speed is suche that , as observed on the ground, it fits entirely in the tunnel - the front is emerging as the back is disappearing. What is the trains speed? How would the observer on the train describe what they "see" - is the emergence from the front simultaneous with the disappearance from the back as the ground observers have shared?