/* From now we'll calculate with fractional cargo amounts.
     * First determine how much cargo we really have. */
    amount *= best_rating + 1;

    uint moving = 0;
    for (auto &p : used_stations) {
        uint owner = p.first->owner;
        /* Multiply the amount by (company best / sum of best for each company) to get cargo allocated to a company
         * and by (station rating / sum of ratings in a company) to get the result for a single station. */
        uint a = amount * company_best[owner] * p.first->goods[type].rating;
        uint b = best_sum * company_sum[owner];
        p.second = a / b;
        moving += p.second;
        p.second |= (65535 * (a % b) / b) << 16;
    }

    /* If there is some cargo left due to rounding issues distribute it according to the highest remainder. */
    if (amount > moving) {
        std::sort(used_stations.begin(), used_stations.end(), [](const StationInfo &a, const StationInfo &b) {
            return b.second >> 16 < a.second >> 16;
        });

        assert(amount - moving <= used_stations.size());
        for (uint i = 0; i < amount - moving; i++) {
            used_stations[i].second++;
        }
    }

    uint moved = 0;
    for (auto &p : used_stations) {
        moved += UpdateStationWaiting(p.first, type, GB(p.second, 0, 16), source_type, source_id);
    }

    return moved;