Challenge 3 The incomplete program below is supposed to prompt the user for a distance in miles and convert the distance that the user enters to kilometres. 1 2 kilometres "Enter a distance in miles:") 3 print(miles, "miles is", kilometres, "km") Step 1 Complete line 1 so that the value assigned to the miles variable is obtained from what the user types on the keyboard. Step 2 Complete line 2 so that the program calculates the value of the kilometres variable to be the equivalent of the miles variable, converted to kilometres. Note that 1 mile is equal to 1.60934 kilometres. ​