There are 12 bags of soybeans in the tofu shop, each bag is 45 kg. 1 kg of soybeans can make 4 kg of tofu. How many kilograms of tofu can be made from these soybeans?
豆腐店有12袋黄豆，每袋45千克．1千克黄豆能做4千克豆腐．这些黄豆能做多少千克豆腐？
<gadget id="calculator">12 * 45 * 4</gadget>
<output>2_160</output>

<result>2_160</result>