How can I view the GBP amount presented to customers at checkout?

[PezzaMac]

Hi

A customer in UK is presented a checkout total of £89.00

The base currency for the store is USD

We can see in the payment processing APIs that they have presented the customer in the currency GBP BUT there is no field showing the actual amount presented - in this example £89. The only value we see is the $109.33

You can see in the screenshot the small writing for charged in USD.

However when you click the card or PayPal option this disappears and is only £89 presented

Any ideas how we can know the £GBP presented amount (ie the £89.00) that was presented to the customer please?