四阶 木滑轮 Fourth-order wooden pulley production line

Input fertilizer and silver coins to produce a quantity sufficient for sale (note that the conveyor belt speed and factory speed are equal; if the sale level is too high, the quantity may still be insufficient, but you can add an extra one, which occupies very little space). 输入肥料和银币，产出足够出售的量（注意传送带速度和工厂速度相等，如果你出售等级过高也可能不够，但是你可以多放一份，占地面积很小）。