Well, wordpress is very popular CMS (Content Management System), and in order to ease developer to add new admin to the wordpress, there are several ways, these I list 2 ways of generating password.

1. https://www.useotools.com/wordpress-password-hash-generator
   On that tool, there will be a step how to setup the password onto the database of your environment.

2. Directly on database
   To update the database directly via mysql, you need to use MD5 function on user_pass column.

So here are the full query :

update wp_users set user_pass = MD5('YourPassword') where user_login = 'fiko';

If you find another ways, please feel free to comment.