Recurring problem. bash command not found

root@rastafi:~/Downloads# ls
cudaHashcat-1.36 cudaHashcat-1.36.7z
root@rastafi:~/Downloads# cd cudaHashcat-1.36
root@rastafi:~/Downloads/cudaHashcat-1.36# cudaHashcat64
bash: cudaHashcat64: command not found
root@rastafi:~/Downloads/cudaHashcat-1.36# cudaHashcat64.bin
bash: cudaHashcat64.bin: command not found
root@rastafi:~/Downloads/cudaHashcat-1.36# ls
charsets cudaExample500.sh example0.hash kernels
cudaExample0.cmd cudaHashcat32.bin example400.hash masks
cudaExample0.sh cudaHashcat32.exe example500.hash rules
cudaExample400.cmd cudaHashcat64.bin example.dict
cudaExample400.sh cudaHashcat64.exe extra
cudaExample500.cmd docs hashcat.hcstat


ive reinstalled my operating system and nvidia drivers and cuda a million times fresh and every time i do hashcat i end up with

root@rastafi:~/Downloads/cudaHashcat-1.36# cudaHashcat64
bash: cudaHashcat64: command not found

how do i fix this i 7z x the file after downloading directly from website... every time i get this.

any advice appreciated. im very frusterated.