The selling price of a mobile phone is 5,600 yuan. In order to welcome the 2014 National Day promotion, the current price is 10% lower than the original price. How much is the current price of this mobile phone?
一部手机的卖价是5600元，为了迎接2014国庆展开促销活动，现价比原价降低了10%，这部手机的现价是多少元？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">5_600 * (9/10)</gadget>
<output>5_040</output>

<result>5_040</result>