New Asia Mall has implemented a big price cut for season-changing clothing. All down jackets are sold at a 25% discount. Xiaohui is optimistic about a down jacket. She calculates that it can be 300 yuan cheaper than before. How much is the original price of this down jacket?
新亚商城实行换季服装大降价，所有羽绒服都打七五折出售，小会看好了一件羽绒服，她一算，可以比原来便宜300元，这件羽绒服原价是多少元？
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">300 / (1/4)</gadget>
<output>1_200</output>

<result>1_200</result>