Mom pancakes on the pan. Bake both sides of the cake, 2 minutes per side. This pot can only bake 2 cakes at the same time. Now I want to bake 4 cakes, how can I bake in the shortest time? how much time is required?
妈妈在平底锅上烙饼．饼的两边都要烙，每烙一面要2分钟．这个锅一次只能同时烙2块饼．现在要烙4块饼，怎样烙用的时间最短？需要多长时间？
<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

<result>8</result>