The perimeter of an isosceles triangle is (9/16) decimeters, and the length of one of the sides is (1/4) decimeters, so how many decimeters is the length of the base?
一个等腰三角形的周长是(9/16)分米，其中一条腰的长是(1/4)分米，则底边的长是多少分米？
<gadget id="calculator">9 / 16</gadget>
<output>9/16 = around 0.5625</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) * 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(9/16) - (1/2)</gadget>
<output>1/16 = around 0.0625</output>

<result>1/16 = around 0.0625</result>