Given that a=3b, c=((a)/2), what is the value of ((a+2b+c)/(a+bc)).
已知a=3b，c=((a)/2)，则((a+2b+c)/(a+b-c))的值为多少．
<gadget id="calculator">13 / 5</gadget>
<output>13/5 = around 2.6</output>

<result>13/5 = around 2.6</result>