A rectangle is (3/4)m long and its width is (1/2)m less than its length. What is the perimeter of this rectangle in meters?
一个长方形长(3/4)m，宽比长少(1/2)m，这个长方形的周长是多少米．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/4) - (1/2)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) + (3/4)</gadget>
<output>1</output>

<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<result>2</result>