if you want to do math ops, you do this: 4+2:n1:4 n2:2 4-2:n1:24n2:2 4x2:n1:4 n2:2 4/2:n1:4 n2:2 the order matters only for subtraction and division.
used my own brain options: addition subtraction multiplication division. 1 hour of my life.
