2,33:1.5

Assuming 2,33 means 2.33 and the colon is a ratio:

• Convert to fractions: 2.33 = 233/100, 1.5 = 3/2.
• Ratio: (233/100) : (3/2) = (233/100) * (2/3) = 466/300 = 233/150.
• Simplest integer ratio: 233:150.
• Decimal form of the ratio (a/b): 2.33 / 1.5 ≈ 1.5533.

So the simplest ratio is 233:150 (approximately 1.5533:1). If you meant something else, let me know.