3,2 : 0,625

Interpreting the notation as a ratio:

• 3,2 : 0,625 means 3.2 : 0.625.

Convert to integers to simplify:

• Multiply both by 1000 → 3200 : 625.
• gcd(3200, 625) = 25 → divide → 128 : 25.

So, the simplified ratio is 128:25. Equivalently, 3.2 / 0.625 = 5.12, so the ratio is 5.12 : 1.