Bonus Scoring System JS Fundamentals

function bonusScoringSystem(arr) {
    let students = Number(arr.shift());
    let lectures = Number(arr.shift());
    let additionalBonus = Number(arr.shift());

    let maxBonus = 0;
    let totalBonus = 0;
    let attendances = 0;
    let bestStudentAttendances = 0;
    for (let i = 0; i < arr.length; i++) {
        attendances = Number(arr[i].split(' '));

        totalBonus = attendances / lectures * (5 + additionalBonus);
        maxBonus = Math.max(maxBonus, totalBonus);
        bestStudentAttendances = Math.max(bestStudentAttendances, attendances);
    }
        console.log(`Max Bonus: ${Math.ceil(maxBonus)}.`);
        console.log(`The student has attended ${bestStudentAttendances} lectures.`);
}