console.log(9999999999999999)
                        

console.log(0.1 + 0.2)
                        

console.log([2, 4, 7, 1, 3].sort())
console.log([40, 100, 1, 5, 25].sort())
                        

console.log(10 / 'coucou')
console.log(typeof NaN)