How to rescale a 1:200 plan to 1:50 and print it out on different A4 sheets?

Hi. I have a pdf map scale 1:200 if print on A1 sheet. I need to convert it to 1:50 and print on A4 sheets as many as required.
Can anyone tell me how to do this?
Thank you

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia…).