compound ket fn: times-by

times-by:
    description:
        times-by[n] ket
        times the value in the ket by n, leaving the coefficient unchanged

    examples:
        times-by[5] |6.1>
            |30.5>

    see also:
        plus, minus, divide-by, int-divide-by, mod, round
        temperature-conversion.sw3