The number A is 28, and the number B is the number A (5/7). What is the sum of the two numbers A and B?
甲数是28、乙数是甲数的(5/7)，甲乙两数的和是多少．
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">28 * (5/7)</gadget>
<output>20</output>

<gadget id="calculator">20 + 28</gadget>
<output>48</output>

<result>48</result>