Method mul

common/src/main/java/pro/tools/data/decimal/Decimal.java:171–174

乘法 @param object @return

(Object object)

     * @return
     */
    public Decimal mul(Object object) {
        this.bigDecimal = this.bigDecimal.multiply(new Decimal(object).getBigDecimal(), mathContext);
        return this;
    }

    /**
     * 除法