A suit costs 1,200 yuan, and it is now on sale with a 30% discount. How much is it cheaper than before?
一套西服1200元，现在打七折销售，比原来便宜多少元？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1_200 * (7/10)</gadget>
<output>840</output>

<gadget id="calculator">1_200 - 840</gadget>
<output>360</output>

<result>360</result>