extend("math")
slog( math:multiply(6,7)) // 42
partialM = math:multiply(10)
slog(partialM(9)) // 90
partialY = math:multiply(_, 3)
slog(partialY(11)) // 33
slog( math:multiply(5, [2,4,6]) ) // => [ 10, 20, 30 ]
slog( math:multiply([3,3,3], 2) ) // => [ 6, 6, 6 ]