No, we don't have calculators to do that. AI, maybe. But a calculator cannot form an equation out of a social context and solve the equation.

If you bought 6 liters of soda for £3/2-liter bottle with 8% consumption tax, how much should it cost?

You have to shape that all into a series of operations for your calculator. The calculator can't do it by itself. Even basic arithmetic takes some education before the calculator can be useful.