Checkout not in default currency

So my default currency is INR.

When a customer chooses USD – then the prices change to USD on all pages.

But what I want is :-

– On Checkout page the price should still be shown as INR (no matter what currency is selected)
– Also when default checkout currency is set to INR but user is checking out after clicking ‘USD’ – then the conversion is literally happening directly (basically if the product is for $ 100 – after checkout I am getting 100 INR)

I am currently developing this site on localhost hence I have attached all relevant screenshots

Checkout options selected : https://prnt.sc/syvgo7

Thank you please!