Numbers are an indispensable part of people's daily life, and the sum of numbers is the result of the addition of multiple numbers. By calculating the sum of the figures, we can get important information, such as the balance in the bank account, the total price of the goods in the shopping cart and so on. In the field of mathematics, calculating the sum of numbers is a basic work, which is very important for solving mathematical problems.

Numbers are digital codes composed of numbers and other information, which are often used to identify different items and products. For example, bar code is a common digital code, which is used to scan and record commodity information in shopping malls. Another example is the ID number, which contains a specific combination of numbers and letters and can be used to identify individuals. Numbers play an important role in modern life, which facilitates our life and work.

In terms of electronic equipment, there is also an important connection between numbers and digital sums. For example, a computer processor can perform various operations by calculating the sum of numbers and output corresponding results. The production of digital audio and video is also inseparable from the processing and coding of digital and other audio and video information. In a word, numbers and numbers are an indispensable part of our modern life.