The base of an isosceles triangle is (2/5)m and the side is (1/4)m. What is the perimeter of the triangle in m?
一个等腰三角形的底是(2/5)m一条腰是(1/4)m，这个三角形的周长是多少m．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">(2/5) + (1/4) + (1/4)</gadget>
<output>9/10 = around 0.9</output>

<result>9/10 = around 0.9</result>