If $2\times8=16$2×8=16, what is $20\times8$20×8?

If $4\times8=32$4×8=32, what is $4\times80$4×80?

If $4\times16=64$4×16=64, what is $4\times160$4×160?

If $3\times12=36$3×12=36, what is $30\times12$30×12?