A clothing store sells 70 pieces of sportswear a day, and 20 pieces in the morning, and each piece of sportswear is 78 yuan. According to this calculation, how much more can you sell in the afternoon than in the morning? (answer in different ways)
一个服装店一天卖出70件运动服，上午卖出20件，每件运动服78元．照这样计算，下午比上午多卖多少元？(用不同方法解答)
<gadget id="calculator">30 * 78</gadget>
<output>2_340</output>

<result>2_340</result>