private Object scaleInput(Object obj) {
            if (divider != null) {
                if (obj instanceof BigDecimal) {
                    obj = ((BigDecimal)obj).divide(divider, RoundingMode.HALF_UP);
                } else if (obj instanceof Double) {
                    obj = (Double)obj / divider.doubleValue();
                } else {
                    throw new UnsupportedOperationException();
                }
            }
            return obj;
        }
Create and return a Format based on the format string from a cell's style. If the pattern cannot be parsed,
return a default pattern.

@param cell The Excel cell
@return A Format representing the excel format. May return null.
fastexcel-test/src/test/java/cn/idev/excel/test/temp/dataformat/DataFormatter1.java