mon_sales = "121"
tues_sales = "105"
wed_sales = "110"
thurs_sales = "98"
fri_sales = "95"

#Printing the string with the format: This week's total sales: xxx
print('This week\'s total sales:{}'.format(int(mon_sales)+int(tues_sales)+int(wed_sales)+int(thurs_sales)+int(fri_sales)))