Numerical combination of aperture and shutter

When shooting, the numerical combination of aperture and shutter is: aperture f 1 1 shutter1/25 seconds in the sun, and aperture f8 shutter 1/60 seconds in the shadow, which is the numerical value taken by the robot camera 40 years ago.

Today, all digital cameras are fully automatic. Whether shooting in P, S or A mode, the camera will combine the aperture and shutter value and only let you press the shutter!

The numerical combination of aperture and shutter is different in different seasons, different times, different places, different subjects and different distances, so the numerical combination of aperture and shutter is not constant, so there is no constant combination. Why do photographers use exposure meters? Is to find the best combination of aperture and shutter to make the exposure accurate. So no one can provide you with an accurate numerical combination!