The ratio of number A to number B is 5:6, then number A is the sum of the numbers A and B.
甲数和乙数的比是5：6，则甲数是甲乙两数和的多少．
<gadget id="calculator">5 + 6</gadget>
<output>11</output>

<gadget id="calculator">5 / 11</gadget>
<output>5/11 = around 0.454545</output>

<result>5/11 = around 0.454545</result>