What is the number that is 15% less than 300?
比300少15%的数是多少．
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 - (3/20)</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">300 * (17/20)</gadget>
<output>255</output>

<result>255</result>