ping 2 networks

Hi
I am from Greece and I need your help.
I recently had a routerboard 493ah.
in the foto you will see how is my network. I have my router(no mikrotik) with the ip 192.168.1.1. also I have a network with 3-4 pcs and the ips are 192.168.1.2-5. That network is connected to eth1 mikrotik port with ip 192.168.1.24. then i make a hotspot on eth3 port with ip 192.168.89.1 is connected to an AP with ip 192.168.89.2.

From my pc with ip 192.168.1.3 I can ping until the eth1 port of the routerboard which has ip 192.168.1.24. I cannot ping eth3 or the AP with ip on 192.168.89.0.

now if I connect my laptop wireless to the AP and get ip from DHCP server for example 192.168.89.5 I can ping both networks, 192.168.1.0 and 192.168.89.0.

From the mikrotik winbox I can ping both networks as well.

My question is how from my pc with ip 192.168.1.3 I can ping the 192.168.89.0 network.

I attached some screenshots from routes and bridges.
Thank you
mikrotik.jpg
router.jpg

what is the gateway for you pc with ip 192.168.1.3 ?

it is 192.168.1.1