any old how：随便地，胡乱地，马马虎虎地：

e.g. What a mess! You can't just paint the wall any old how!

真是一团糟糕！就这么胡乱地涂涂抹抹也算是漆墙？

e.g. Do it any old how——the best you can.

怎么做都行，你就尽力而为吧！