Answer:
Multiplication
Explanation:
I think what you're talking about is not a decimal, but a multiplication point:
![(1)/(2) \: . \: (3)/(4)](https://img.qammunity.org/2022/formulas/mathematics/college/m8qc2yvlahj6unbv12ucbajilly13gn8gd.png)
This dot can donate multiplication when in the middle of two numbers and/or fractions.
But if you're talking about some other point, then I don't know, sorry. :(