The purchase price of an MP5 is 300 yuan, and the selling price is determined after a 20% increase. What is the selling price?
一种MP5的进价300元，加价二成后定为出售价，出售价是多少元．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">300 * (6/5)</gadget>
<output>360</output>

<result>360</result>