presto-main/src/main/java/io/prestosql/type/DecimalOperators.java/DecimalOperators/multiplyLongShortLong
class DecimalOperators:    @UsedByGeneratedCode
    public static Slice multiplyLongShortLong(Slice a, long b)
    {
        return multiplyLongLongLong(a, encodeUnscaledValue(b));
    }