title: How can AWK do array arithmetics?
body: <p>I want to shift away from Excel to Awk. I need basic mathematical operations, such as addition and division, for arrays. </p>
  
  <p>For example, arrays A and B are [1, 3, 2] and [2, 1, 2], respectively. How can I get an array [2, 3, 4] from the multiplication between A and B? What about the addition and division between A and B?</p>