Given a+b=(3/4), a/b=0.5, what is (1/2)(a+b)/b equal to?
已知a+b=(3/4)，a/b=0.5，则(1/2)(a+b)/b等于多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * 1.5</gadget>
<output>0.75</output>

<result>0.75</result>