Trying to run a program on a tablet not rooted, possible?


Hi all,
sorry if my question is stupid, but I am not expert. I want to run a program written by me named 4 (for some heavy math computations, no input, just output to a file, the only thing I need is CPU) but when I run Termux on a Huawei MediaPad M5 I get always permission denied. I managed to find the file blindly in /storage/emulated/0/4.

On two phones without being root I copied it in the home dir of the terminal app and made chmod and run it. Very easy

But here even cp is refused because permission denied. Is there any way to do this also here without being root?

Thanks in advance