During the "May 1st Golden Week", the price of a certain brand of TV was reduced by 20% to 780 yuan. How much is the original price of this brand of TV?
"五一黄金周"期间，某品牌电视机降价20%后是780元．该品牌电视机的原价是多少钱？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">780 / (4/5)</gadget>
<output>975</output>

<result>975</result>