var cost = [157,98,54];
var size = [35, 25, 99];
// =======================================================================
var max = [cost[0], size[0]]
var min = [cost[0], size[0]]
var max = 0;
for (var i = 0; i < cost.length; i++) {
for (var j = i; j < size.length; j++) {
if (cost[i] * size[j] > max) {
max = cost[i] * size[j];
}
}
}
console.log(max);