Question: multiply array to a matrix

Hi, I have a array with 5 numbers in it. I would like to multiply it into a 3x3 matrix, how do i do that?

for example A:=([3,5,7,9,15])


how do i get 5 sets of output when i multiply it together? And can i get pick out each outpur as well? for example, I want the 3rd output which is the matrix multiply with 7, can I pick it out seperately if I wanted?

Please advice. Thanks

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