Routing between two LAN

RouterOS Beginner Basics
1

Hi,
I've bought my first Mikrotik and have problem. I've to devices in my network.

  1. First Mikrotik hAP lite: ETH1 - WAN, ETH2,ETH3,ETH4,Wlan1 - LAN Bridge
    LAN pool ip: 192.168.31.151-192.168.31.254
    DHCP server 192.168.31.1 (Mikrotik)
    LAN network 192.168.31.0/24

  2. Device form the ISP TVbox+modem Horizon - without bridge mode - 192.168.1.1 (this is gateway ip)

I've connectef ETH1 Mikrotik to the LAN i TVBOX.Mikrotik has ip: 192.168.1.181. I haven't access to the internet. How can I set routing between this networks?

below more info:
[admin@MikroTik] > /ip route print
Flags: X - disabled, A - active, D - dynamic,
C - connect, S - static, r - rip, b - bgp, o - ospf, m - mme,
B - blackhole, U - unreachable, P - prohibit

DST-ADDRESS PREF-SRC GATEWAY DISTANCE

0 DC 192.168.1.0/24 192.168.1.181 ether1 255
1 ADC 192.168.31.0/24 192.168.31.1 LAN Bridge 0

Could somebody help? Thank You

2

If you want access to internet, you need default gateway:

/ip route
add dst-address=0.0.0.0/0 gateway=192.168.1.1