How did Missouri foxtrot get a lot of money?

The acquisition method of Missouri foxtrot horse in this game is as follows:

In a handful of dollars, in order to get the Missouri foxtrot horse, it is necessary to unlock the stables in the small town of Valentine, and then complete the third part of the "lover's paradise" mission. After that, stop the horse behind the photographer's ass, talk to the photographer, and ride the horse to catch the horse. Among the horses, find a black and white Missouri foxtrot horse, tame it to improve the tacit understanding, and finally register it in the stable.