求一个算法.源数据长度固定,没有规律,不连续.去掉前面的数字,保留后面6位数字
数据                转换成            数据
156075500000958                   000958
156075500002496                   002496
156075500002492
156075500002493
156075500002482
156075500002485
156075500002967
156075500002487
156075500002486
156075500002966
156075500002978
156075500000998
156075500002420
156075500002401
156075500002416
156075500002412
156075500002423                  002423