1. Company XYZ has less than one year since starting the activity, the monthly installments of the advance on profit tax are calculated as follows: Profit tax: The year 2017 = 1.200.000 ALL (taxpayer started activity on 1 May 2017). We assume that the taxpayer has estimated that the profit tax for January-April will be 400,000 ALL. a. Calculate the monthly installments of profit tax advances for the period May-December 2017 b. Calculate the monthly installments of profit tax advances for the period January-April 2018