Respawn time on a little server

Hi guys and gals! I have another, i hope simply question.

I made a server to play with my friends, we are just 20 so the respond time on most zones are unplayable if you are question alone.

I’ve seen that respawn time are different on every creature. Is there any way for increase that time by 400% for example with trinity core configuration or with a SQL query?

UPDATE `creature` SET `spawntimesecs`=spawntimesecs / 4; -- this will reduce the respawn time of ALL creatures by 400%

THANKS SO MUCH! Trying now!

It works but i needed to put spaces and also to increase i need to multiply not divide

UPDATE `creature` SET `spawntimesecs` = spawntimesecs * 4;