If a computer is priced at a 20% profit, you can get a profit of 600 yuan; if you sell it at a 10% discount on the price, how much profit can you get.
一种电脑，若按20%的利润计算定价，可获得600元的利润；若按定价的九折出售，可获得利润多少元．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">600 / (1/5)</gadget>
<output>3_000</output>

<gadget id="calculator">3_000 + 600</gadget>
<output>3_600</output>

<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">3_600 * (9/10)</gadget>
<output>3_240</output>

<gadget id="calculator">3_240 - 3_000</gadget>
<output>240</output>

<result>240</result>