ReactJs checkbox calculator?

Question

JavaScript

Please tell me an example of calculators (code) for checkboxes on React, example: https://xn--80adh6ajjb9c2d.xn--p1ai/analizy/
That is, we select checkboxes, the price changes, we can also remove these checkboxes and the price also changes, I looked in I couldn't find it online,
thanks in advance!

Answer 1

https://jsfiddle.net/Lqenu790/
or
https://jsfiddle.net/qugerz9x/