07 Letters sum

function solve(productName, ctrlNum, budget) {
    ctrlNum = Number(ctrlNum);
    budget = Number(budget);

    let sum = 0;
    for(let i = 0; i<productName.length; i++) {
        if(productName[i] == 'a' || productName[i] == 'e' || productName[i] == 'i' || productName[i] == 'o' || productName[i] == 'u' || productName == 'y') {
            sum += 3;
        } else {
            sum += 1;
        }
    }

    sum *= ctrlNum;

    let difference = Math.abs(budget - sum);
    if(budget >= sum) {
        console.log(`${productName} bought. Money left: ${difference.toFixed(2)}`);
    } else {
        console.log(`Cannot buy ${productName}. Product value: ${sum.toFixed(2)}`)
    }
}