The original price of a sweater is 56 yuan, but the current price is lower than the original price (2/7), how much is the current price?
一件毛衣，原价56元，现在的价格比原来降低了(2/7)，现在的价格是多少元？
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 - (2/7)</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">56 * (5/7)</gadget>
<output>40</output>

<result>40</result>