The cost price of a commodity is 900 yuan. If the merchant sells it to customers at a profit rate of 20%, how much is the selling price?
一件商品的成本价为900元，如果商家以20%盈利率卖给顾客，那么售价为多少元？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">900 * (6/5)</gadget>
<output>1_080</output>

<result>1_080</result>