The area of a rectangle is 90 square centimeters. If its length and width are reduced to one-third of the original. What is the area.
一个长方形的面积是90平方厘米．如果把它的长和宽都缩小到原来的三分之一．面积是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * (1/3) * 90</gadget>
<output>10</output>

<result>10</result>