For when you are making a joint order with HopShopGo and want to know how much each of you have to pay for the shipping.
$cost = $weight / $weightTotal * ($y - $firstHalfKilo) + ($firstHalfKilo / count($x));
The first half-kilo, at US$24 (US$28.80 express. Less 10% paying with PayPal, which is mandatory anyway,) is split evenly amongst participants. The rest of the cost (which includes required insurance, fuel levy, etc.) is adjusted to the weight of individuals’ package(s.)
You must fill out at least two participants to split the cost.
Numbers only, please. Yes, I can tell.
Now with 50% more accurates!