Some help with Babypips Lots size calculator

Was wondering if someone could help me with working out why my lot size doesn’t quite add up

See screenshot for the numbers I have entered. The suggestion is 90 000 units, but Oanda says I can only use 68 000- ish…

A bit confused!

Kind regards
Anton

Don’t feel bad, everybody is confused in the begining. Hard to believe if you keep at it, in a couple of months, you’ll be saying to yourself, I can’t believe this had me confused. Try this calculator, it will help you understand baby pips better.
Forex Money Management

Sorry gp00053, a belated thank you for the reply! Yes already concepts that were alien to me before are now becoming straight forward so I should just have faith in the learning process:)