---json
{
    "comments": {
        "title": {
            "en": "Simple interest",
            "es": "Interés simple",
            "pt": "Juros simples"
        },
        "goal": {
            "en": "Calculate a balance with a fixed annual simple rate and no reinvestment.",
            "es": "Calcular un saldo con tasa anual simple fija y sin reinversión.",
            "pt": "Calcular um saldo com taxa anual simples fixa e sem reinvestimento."
        },
        "check": {
            "en": "Check the expected result; true means the check passed.",
            "es": "Comprobar el resultado esperado; true indica que la comprobación pasó.",
            "pt": "Verificar o resultado esperado; true indica que a verificação passou."
        }
    }
}
---
% {{ comments.title[lang] }}
% {{ comments.goal[lang] }}
clear

principal = 1500
annual_rate = 0.04
years = 3
interest = principal*annual_rate*years
balance = principal+interest

% {{ comments.check[lang] }}
example_check = interest == 180 && balance == 1680