Build a wall

function buildWall(arr) {
    arr = arr.map(Number);

    let wallSections = arr.length;

    let workingDays = 30 - Math.min(...arr);
    let concrete = [];

    for(let i = 0; i < workingDays; i++) {
        if(arr.includes(30)) {
            arr.splice(arr.indexOf(30), 1);
            wallSections = arr.length;
        }

        concrete.push(wallSections * 195);
        arr = arr.map(x => x + 1);
    }

    let totalConcrete = 0;

    for(let el of concrete) {
        totalConcrete += el;
    }

    console.log(concrete.join(', '));
    console.log(`${totalConcrete * 1900} pesos`);
}

buildWall([17, 22, 17, 19, 17]);