Dashang Group is running a discount promotion, with 40% off clothing and 20% off stationery. Naughty wants to buy a piece of clothing with an original price of 450 yuan and a schoolbag with an original price of 210 yuan. How much do you actually have to pay?
大商集团搞打折促销活动，服装类打六折，文具类打八折，淘气想买一件原价450元的衣服和一个原价210元的书包，实际要付多少元？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">450 * (3/5)</gadget>
<output>270</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">210 * (4/5)</gadget>
<output>168</output>

<gadget id="calculator">270 + 168</gadget>
<output>438</output>

<result>438</result>