[求助]如何给数据加一个常数,

lihongyu2467

如下坐标数据，存在AA.txt中我想给x加1000，y加2000，然后存在AB.txt中该怎么做？
1,,3033.01,5089.60,149.12
2,,3023.92,5084.02,148.92
3,,3078.96,4987.45,148.36
......
变为
1,,4033.01,7089.60,149.12
2,,4023.92,7084.02,148.92
3,,4078.96,6987.45,148.36
......
谢谢大家了。