I have Jaun's (John's) calculator.
i have a calculator
"tú necesitas una calculadora"= you need a calculator
Do you mean 'calculator'? If so, 'calculador' is pronounced kal-koo-lah-dOR Close enough but it's feminine so it should be calculadorA with a at the end as in UNA calculadora
"Calculator"
The calculator.
What? That's not a word in Spanish. Do you perhaps mean 'calculadora' = calculator, computer
The Portuguese word "calculadora" translates to "calculator" in English. As a side note, Google has a translation service which can easily handle any future inquiries.
"Tengo el perro" translates to "I have the dog" in English.
Amiga por vida means friend for life. (Amiga is feminine & Amigo is masculine)
"Es mi amiga" means "She is my friend" in Spanish.
Tengo means 'i have' if you had the phrase 'Tengo un problema' that would mean in english, 'i have a problem'
you too my friend