Affected by the H1N1 flu, Great Wall Travel Agency launched two preferential plans to increase passenger flow, A: 160 yuan per adult, two adults can bring a child, B: 100 yuan per person for groups of 5 or more (including 5 people). There are currently 7 adults and 3 children. If you want to buy tickets the most economically, you should buy (plan A, plan B). How much can you save?
受H1N1流感影响，长城旅行社为提高客流量推出两种优惠方案，A：大人每位160元，两名大人可以携带一名儿童，B：团体5人以上(含5人)每位100元．现有7个大人、3个小孩，要使得买票最省钱应买(A方案、B方案)，可以省多少元？
<gadget id="calculator">160 * 7</gadget>
<output>1_120</output>

<gadget id="calculator">100 * 10</gadget>
<output>1_000</output>

<gadget id="calculator">1_120 - 1_000</gadget>
<output>120</output>

<result>120</result>