The original price of a mobile phone is 1600 yuan, and now it is sold at a 10% discount. What is the current price?
一种手机原价是1600元，现在打九折出售，现价是多少元．
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1_600 * (9/10)</gadget>
<output>1_440</output>

<result>1_440</result>