[1,2]*2 => [1,2,1,2]
[1,2]*[1,2] => [[1,2], [1,2,1,2]]
[1,2] \each(*) 2 => [2,4]
[1,2] \each(*) [1,2] => [[1,2],[2,4]]
[1,2] * 1.5 => [1,2,1]
[1,2,3,2] / 2 => [1,2]
[1,2] * 1i => [[1],[2]] #rotation!
[1,2,3,2,2,2] % [2] => [1,2,3]
[1,2,3,2,3] / [2,3] => 2
[2,3,1,2,3] / [1,2,3] => 1.666...