The number A is 28, the number A is twice the number B, what is the sum of the numbers A and B?
甲数是28，甲数是乙数的2倍，甲、乙两数的和是多少．
<gadget id="calculator">28 / 2</gadget>
<output>14</output>

<gadget id="calculator">14 + 28</gadget>
<output>42</output>

<result>42</result>