Aunt Wang bought 130 umbrellas. The purchase price of each umbrella is 15 yuan, and the selling price is 20 yuan. After selling 80 umbrellas, the remaining umbrellas will be sold at a discount (1/10) from the original price. How much money did Auntie make in total after these umbrellas were sold out?
王阿姨购进130把雨伞，每把伞的进价是15元，售价是20元，卖出80把后，剩下的伞按原售价优惠(1/10)销售，算一算王阿姨这批伞售完后，一共盈利多少元钱？
<gadget id="calculator">20 * 80</gadget>
<output>1_600</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">130 - 80</gadget>
<output>50</output>

<gadget id="calculator">20 * (9/10) * 50</gadget>
<output>900</output>

<gadget id="calculator">1_600 + 900</gadget>
<output>2_500</output>

<gadget id="calculator">15 * 130</gadget>
<output>1_950</output>

<gadget id="calculator">2_500 - 1_950</gadget>
<output>550</output>

<result>550</result>