sweater is priced at 490 yuan after a 30% discount. If it is 35% off, how much cheaper will it be?
一件毛衣打七折后售价490元，如果打六五折的话，还会便宜多少钱？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">490 / (7/10)</gadget>
<output>700</output>

<gadget id="calculator">65 / 100</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">700 * (13/20)</gadget>
<output>455</output>

<gadget id="calculator">490 - 455</gadget>
<output>35</output>

<result>35</result>