Can you solve the maths in the below-given picture equation?

Distances from you to certain cities are written below.

BERLIN 200 miles

PARIS 300 miles

ROME 400 milesAMSTERDAM 300 miles

CARDIFF ??? miles

How far should it be to Cardiff ?

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

There is a family that live in a round house. The two parents go out for a movie and leave a babysitter to watch their son. They come back and the kid was not there. Some one kidnapped him. The maid said she was cleaning in a corner. The cook said he was making pizza. The babysitter said she was getting a board game. Who kidnapped him.

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

My location can be determined by the below rebus.
So where am i ?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G