travel agency offers two plans - Plan A: 200 yuan per person for a group of more than 12 people (including 12 people); Plan B: 240 yuan per adult and 160 yuan per child. There are 8 parents taking 4 children to travel, which plan is cheaper? How much cheaper?
某旅行社推出两种方案--A方案：团体12人以上(含12人)，每位200元；B方案：成人每位240元，小孩每位160元．有8位家长带4位小孩去旅游，选哪种方案便宜？便宜多少钱？
<gadget id="calculator">240 * 8</gadget>
<output>1_920</output>

<gadget id="calculator">160 * 4</gadget>
<output>640</output>

<gadget id="calculator">1_920 + 640</gadget>
<output>2_560</output>

<gadget id="calculator">4 + 8</gadget>
<output>12</output>

<gadget id="calculator">200 * 12</gadget>
<output>2_400</output>

<gadget id="calculator">2_560 - 2_400</gadget>
<output>160</output>

<result>160</result>