1. Right-click on the computer desktop to create a new excle table with the title: summary of troops and friends. Fill in the type/date of dishes in the first table, and the horizontal menu can be: cabbage, radish, fish, pork, etc. All the dishes you bought are written, and finally the total amount, that is, the total cost of a day, is written. The vertical menu is the date, and the last item is also the total, which is the total cost of a dish per unit time.

2, pay attention to the problem, fill in the data set table format for numbers.

3. The calculation method is summation. Select the form to fill in the summation result, click the data f(x) sum to select all the numbers to be added, and click Enter.