[salexseen]

goods=[].map.call(document.querySelectorAll(".goods"), function(x){return x})
    prices=goods.map(function(x){return +x.getAttribute("price")})

    count=function(arr1, arr2){
        var arr=[]
        for(var i=0; i<arr1.length; i++) arr.push(arr1[i]*arr2[i])
        return arr.reduce(function(x, y){return x + y})
    }

    inputs=goods.map(function(x){return x.querySelector("input")})
    outs=goods.map(function(x){return x.querySelector(".out")})
    inputs.forEach(function(x, i, arr){
        x.onkeyup=function(){
            outs[i].innerHTML=+this.value*prices[i]

            var numbers = arr.map(function(x){return +x.value});
            out.innerHTML=count(numbers, prices);
        };
    })

    b.onclick=function(){
        var numbers=inputs.map(function(x){return +x.value})
        out.innerHTML=count(numbers, prices)
    }