let auto = [
{value: 1, type: "car"},
{value: 2, type: "bike"},
{value: 4, type: "car"},
{value: 5, type: "car"},
{value: 7, type: "car"},
{value: 2, type: "bike"},
];
let sumCar = 0;
let sumValueCar = 0;
let result = 0;
auto.forEach((e) => {
if(e.type == "car"){
sumCar ++;
sumValueCar += e.value;
result = sumValueCar/ sumCar
}
})
console.log(result)