garment factory plans to increase the output of a certain brand of clothing by 30% compared with last year, but actually produced 15% more than the planned output. By what percentage is the actual output of this brand's clothing this year more than last year?
某服装厂计划某种品牌的服装产量比去年增长30%，实际又比计划的产量多生产了15%．此品牌的服装今年的实际产量比去年多百分之几？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 + (3/10)</gadget>
<output>13/10 = around 1.3</output>

<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 + (3/20)</gadget>
<output>23/20 = around 1.15</output>

<gadget id="calculator">1 * (13/10) * (23/20)</gadget>
<output>299/200 = around 1.495</output>

<gadget id="calculator">(299/200) - 1</gadget>
<output>99/200 = around 0.495</output>

<result>99/200 = around 0.495</result>