2,2*5,45

It looks like your expression might contain a typo or formatting issue. If you intended to write a mathematical expression, could you please clarify? For example:

• If you mean \( 2.2 \times 5.45 \), the calculation would be:

\( 2.2 \times 5.45 = 11.99 \)

• If you meant something else, please provide more details.