Suppose that, five stress scenarios are considered. They lead to losses ($000s) of 235, 300, 450, 750, and 850. The probabilities assigned to the scenarios are 0.5%, 0.2%, 0.2%, 0.05%, and 0.05%, respectively. The total probability of the stress scenarios is, therefore 1%. This means that the probability assigned to the scenarios generated by historical simulation is 99%. Assuming that equal weighting is used. Compute the 1-day 99% expected shortfall. (3 marks)