Mom bought a set of skirts with an original price of 350 yuan in the store, and she can enjoy a 20% discount with the discount card. How much can mother save by buying this skirt compared to the original price?
妈妈在商店买了一套原价350元的裙子，凭优惠卡可以享受八折优惠，妈妈买这套裙子可以比原价节省多少元？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">350 * (4/5)</gadget>
<output>280</output>

<gadget id="calculator">350 - 280</gadget>
<output>70</output>

<result>70</result>