The cost price of a commodity is 120 yuan. If you want to make a profit of 15%, what is the selling price?
一件商品，成本价是120元，如果要获利15%，卖出价应是多少元．
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 + (3/20)</gadget>
<output>23/20 = around 1.15</output>

<gadget id="calculator">120 * (23/20)</gadget>
<output>138</output>

<result>138</result>