WTH - Is there no Simple Maths Helper

WTH, is there not a simple helper to perform basic addition, subtraction, multiplication and division - For example 0.300 kWh entity X 1000 to output 300w or anything else we want to perform very basic maths on.

I completely agree and was also looking for something similar w/o creating template sensors with (at leat for me) hard to understand syntax.

I come from EDOMI and I liked the logic builder with many features for math and comparisons…