what does this sentence mean exactly?

[sebastian__rs]

"Let's split the cost right down the middle."

Does it mean that the cost should be lowered to the half or that the cost should be split between two persons?
Thank you.

[Tdol]

The costs should be split exactly.

[sebastian__rs]

Thank you :D

[Tdol]

In a restaurant, splitting the bill is often called 'going Dutch'.