function stringin_along_d(a=['Born in the USA','Solja Boi',"Rachmaninoff's 4th"],b=0){
var llength = a.length;
console.log(llength);
for (let i=0; i<=llength; ++i){
let title_low = a[i].toLowerCase()
let title = title_low.charAt(0).toUpperCase() + title_low.slice(1)
return (`The number ${i+1} bestseller today is: ${title}`)
}
}