/*6. Using a Do Loop, add a new column to the dataset that will contain for each row the factorial of the last digit in Sold. Print the first 10 rows. You can isolate the last digit with Mod(Sold,10) The factorial of 0 is 1. The factorial of any other positive integer is the product of all the preceding integers. 0! = 1, 1!=1, 6! = 6*5*4*3*2*1*/