for...of.

Third class. You want each amount on its own line. for...of walks the values:

for (const amount of amounts) { console.log(amount); }

Each time, amount gets the next number. For beginners this is simpler than a classic index for.

Mini example:

for (const n of [12, 25]) { console.log(n); }

Common mistake: for (const amount in amounts) — in walks keys/indexes as strings, not the values.