How can I do it like in the picture

[regeditt]

Hello to everyone

How can I do it like in the picture

https://eksiup.com/p/qk2308164ish 

[Robert Rand]

It looks like you're asking for a way to sell a product based on size parameters that the shopper must enter. There are existing extensions in the Magento Marketplace that can help with this, like:

https://marketplace.magento.com/fme-pricecalculator.html

https://marketplace.magento.com/emipro-pricecalculator.html

https://marketplace.magento.com/best4mage-dppc.html

Perhaps one of these will meet your needs. If this is not exactly what you were looking for, perhaps you can share more details about your current needs.

Best of luck!

[alyk _west]

also, you can try the mag-manager.com