A kind of electric appliance used to be 1090 yuan each, and it was discounted by 25% during the "11th" period. How much can you save by buying such an electric appliance?
一种电器原来每台1090元，"十一"期间七五折优惠，购买一台这样的电器能节省多少元？
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1_090 * (3/4)</gadget>
<output>1_635/2 = around 817.5</output>

<gadget id="calculator">1_090 - (1_635/2)</gadget>
<output>545/2 = around 272.5</output>

<result>545/2 = around 272.5</result>