A windbreaker is now priced at 210 yuan, which is 30% lower than the original price. How much was the original price of this windbreaker?
一件风衣现在售价为210元，比原来售价降低了30%，这件风衣原来售价多少元？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">210 / (7/10)</gadget>
<output>300</output>

<result>300</result>