There are two commodities, A and B, with a total cost of 2,200 yuan. Commodity A is priced at 20% of the profit, and commodity B is priced at 15% of the profit. Later, they are both sold at a discount of 90% of the price. The result is still a profit of 131 yuan. How much is the cost?
甲、乙两种商品，成本共2200元，甲商品按20%的利润定价，乙商品按15%的利润定价，后来都按定价的90%打折出售，结果仍获利131元，甲商品的成本是多少元？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(9/10) * 2_200</gadget>
<output>1_980</output>

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

<gadget id="calculator">(9/10) * 2_200 * (3/20)</gadget>
<output>297</output>

<gadget id="calculator">131 - 1_980 - 297</gadget>
<output>-2_146</output>

<gadget id="calculator">2_200 + (-2_146)</gadget>
<output>54</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(9/10) * (1/5)</gadget>
<output>9/50 = around 0.18</output>

<gadget id="calculator">(9/10) * (3/20)</gadget>
<output>27/200 = around 0.135</output>

<gadget id="calculator">(9/50) - (9/10) - (27/200)</gadget>
<output>-171/200 = around -0.855</output>

<gadget id="calculator">(9/10) + (-171/200)</gadget>
<output>9/200 = around 0.045</output>

<gadget id="calculator">54 / (9/200)</gadget>
<output>1_200</output>

<result>1_200</result>