quastion about timers in arduino mega 2560.

I want to set the timers 1 and 3 to be 60Hz.
please any one help me?
I already change timer0 to be 60Hz but I need also the timers 1 and 3 to be 60Hz.
thanks.

Why? Many things rely on Timer0 operating at it's usual speed.

in my project I don't need too much things I just need 6 pwm's with frequency of 60Hz.

Can you create just 1 and buffer it out to six loads?

no because the pwm's should work in parallel.

I'll happy if you can send me example code for what you suggested.