When the mobile phone boss buys a certain kind of mobile phone, the purchase price is 2,500 yuan, then the boss sells it to the customer at 2,880 yuan, and finds the profit rate.
手机老板在进某种手机时，进价为2500元，那么老板以2880元卖给顾客，求盈利率．
<gadget id="calculator">2_880 - 2_500</gadget>
<output>380</output>

<gadget id="calculator">380 / 2_500</gadget>
<output>19/125 = around 0.152</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(19/125) * 1</gadget>
<output>19/125 = around 0.152</output>

<result>19/125 = around 0.152</result>