Coding A Page in Shopify

Hello, We would like to have a carbon foot print calculator for our travel. This is how it would work: Gamze is on her trip to Vienna and she wants to balance the carbon emissions she creates while she is going back and forth via airplane. Here she enters: Transportation: Airplane From: Istanbul To: Vienna Class: Economy Transfer: 0 She adds the flight If there's no other flights or travel she would like to add, she clicks on calculate. Here, the CO2 emissions will be calculated via the carbon-km table that we provided below according km between Istanbul-Vienna. From here, again the system will calculate the plants that needed to be planted in order to offset CO2 emissions created by the flight that Gamze took. If the client wants to offset her carbon footprint from her flights, she clicks on OFFSET. Here offset link goes to another website that we are partnered with to proceed the carbon offset. They complete their checkout from the third party website. Infrastructure Transportation Vehic;e / Co2 Release information : Train: 14g / km Car 4 Persons: 48g / km Car 1-2 people: 122g / km Bus: 68g / km Engine: 72g / km Flights: 285g / km 60TL to balance 1 Ton of CO2 Release 1 Plant = 13 TL And we want "the number of passengers" option only when the car is selected for the transportation vehicle. In the photo we have this calculator in two different languages. Please look within the box. / represents the translation of every word. Thank You!