Can't ping from PC0 to Router

[strekhj]

hello, i'm new here, i've really tired to find these thing's out all day, hopin' to get an answer in here.

so i have an assignment:

-to ping from PC0 to PC1 and vice versa

-to access ilkom.com from web browser PC0

-to access pendilkom.com from web browser PC1

PC1, ilkom.com and DNS Server could get ping to each other very well, even to router, but when i test ping PC0 and pendilkom.com to each other, it always get request timed out, when i ping PC1 to pendilkom.com, it get's "destination host unreachable", help please, the zip file is attached.