The food factory bought 16 bags of soybeans, 50 kg each. If 1 kilogram of soybeans can make 4 kilograms of tofu, how many kilograms of tofu can these soybeans make in total?
食品厂买来16袋黄豆，每袋50千克．如果1千克黄豆能做4千克豆腐，这些黄豆一共能做多少千克豆腐．
<gadget id="calculator">50 * 16</gadget>
<output>800</output>

<gadget id="calculator">4 * 800</gadget>
<output>3_200</output>

<result>3_200</result>