function garage (input){
let cars = {}
input.map(element =>{[carNum,carsInfo]= element.split(" - ")
if(cars[carNum]=== undefined){
    cars[carNum] = []
}
cars[carNum].push(carsInfo)
});
let output = ""
Object.entries(cars).sort((a,b) => a[0]-b[0]).forEach(([garage, cars])=> {
    output += `Garage № ${garage}\n`;
    for (let currCar of cars) {
        currCar = currCar.replace(/: /g, ' - ');
        output += `--- ${currCar}\n`
    }
})
console.log(output)
}