Hi Mikrotik experts,
I start to learn Mikrotik, newbie level, I dig in this forum to config my RB450G with this diagram

I found some config in this forum, but a bit confuse about bridge and vlan configure, i want eth1(WAN) and eth2 to use the same subnet ip from gw that can help me to expand the ethernet port from my gw, and assign a new vlan on eth3 and eth4, and able to access internet via eth1, and allow from 192.168.1.0/24 to route to each vlan too,
and each vlan will be have ip with 10.1.xx.0/24 (xx refer to vlan id)
with this code
/interface ethernet
set [ find default-name=ether1 ] name=eth1-wan
set [ find default-name=ether2 ] name=eth2-lan
set [ find default-name=ether3 ] name=eth3-lan
set [ find default-name=ether4 ] master-port=eth3-lan name=eth4-lan
set [ find default-name=ether5 ] name=eth5-trunk
/interface vlan
add interface=eth5-trunk name=vlan10 vlan-id=10
add interface=eth5-trunk name=vlan20 vlan-id=20
add interface=eth5-trunk name=vlan30 vlan-id=30
add interface=eth5-trunk name=vlan40 vlan-id=40
add interface=eth5-trunk name=vlan50 vlan-id=50
/ip address
add address=10.1.10.1/24 interface=vlan10 network=10.1.10.0
add address=10.1.20.1/24 interface=vlan20 network=10.1.20.0
add address=10.1.30.1/24 interface=vlan30 network=10.1.30.0
add address=10.1.40.1/24 interface=vlan40 network=10.1.40.0
add address=10.1.50.1/24 interface=vlan50 network=10.1.50.0
/ip dhcp-server network
add address=10.1.10.0/24 comment=vlan10 dns-server=10.1.10.1 gateway=\
10.1.10.1
add address=10.1.20.0/24 comment=vlan20 dns-server=10.1.20.1 gateway=\
10.1.20.1
add address=10.1.30.0/24 comment=vlan30 dns-server=10.1.30.1 gateway=\
10.1.30.1
add address=10.1.40.0/24 comment=vlan40 dns-server=10.1.40.1 gateway=\
10.1.40.1
add address=10.1.50.0/24 comment=vlan50 dns-server=10.1.50.1 gateway=\
10.1.50.1
what I need to configure to do in diagram? please help