2:2.2

It seems like you've provided a numerical expression "2:2.2." If you meant to convert this into a simpler format or perform a calculation, it could be interpreted as a ratio or division.

If it's a ratio:

• 2:2.2 can be simplified by dividing both numbers by 2, which gives you 1:1.1.

If it's a division:

• \( \frac{2}{2.2} \approx 0.909 \) (approximately).

Please clarify your intention if you need further assistance!