The original price of a backgammon learning machine H2 is 1820 yuan, with a 20% discount during the "New Year's Day" period. How much can you save by buying such a backgammon learning machine during the "New Year's Day" period?
一台步步高学习机H2原价1820元，"元旦"期间八折优惠，"元旦"期间购买一台这样的步步高学习机可以节省多少元？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1_820 * (4/5)</gadget>
<output>1_456</output>

<gadget id="calculator">1_820 - 1_456</gadget>
<output>364</output>

<result>364</result>