The ratio of width to length of a rectangle is 3:8, and the ratio of width to length is 15 decimeters. What is the area of the rectangle in square meters?
一个长方形的宽与长的比是3：8，宽比长短15分米，这个长方形的面积是多少平方米．
<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<gadget id="calculator">15 / 5</gadget>
<output>3</output>

<gadget id="calculator">15 / 5 / 100</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">8 * 3 * 3 * (3/100)</gadget>
<output>54/25 = around 2.16</output>

<result>54/25 = around 2.16</result>