Cat Diet

function catDiet(input) {
    let fats = Number(input[0]);
    let proteins = Number(input[1]);
    let carbohydrates = Number(input[2]);
    let calories = Number(input[3]);
    let water = Number(input[4]);

    let caloriesPerGram = (100 - water) * (calories / (calories * fats / 9 + calories * proteins / 4 + calories * carbohydrates / 4));
    console.log(`${caloriesPerGram.toFixed(4)}`);
}


Taрикатско решение:)

function catDiet(input) {

    console.log(`${((100 - Number(input[4])) * (Number(input[3]) / (Number(input[3]) * Number(input[0]) / 9
        + Number(input[3]) * Number(input[1]) / 4 + Number(input[3]) * Number(input[2]) / 4))).toFixed(4)}`);
}