A department store supermarket buys 5 boxes of white cat washing powder, 40 packs per box, and the purchase price for each pack is 3.8 yuan. If you retail at a price of 4.5 yuan per pack, how much money can the department store make if you sell these 5 boxes of washing powder?
百货超市购进5箱白猫牌洗衣粉，每箱40包，每包的进价是3.8元．如果以每包4.5元的价格零售，卖完这5箱洗衣粉，百货超市可以赚多少钱？
<gadget id="calculator">4.5 - 3.8</gadget>
<output>0.7</output>

<gadget id="calculator">0.7 * 40 * 5</gadget>
<output>140</output>

<result>140</result>