First of all, as a discipline. Mathematics and philosophy are the source sciences of all sciences. The ultimate goal of science is to pursue truth, and philosophy provides methodology. And the number is the most real result. Not to mention science and engineering, even those who study art should know the calculation angle and the golden section!

Everything from the arithmetic in grocery shopping to the train timetable to the launch of the space shuttle is inseparable from mathematics. From IT, to architecture, to finance, to taxation, to design ... that industry is inseparable from mathematics.

Mathematics is really everywhere. What would society be like without mathematics?