The number A is 2.5 less than the number B, and the number B is 6 times that of A. What is the sum of the two numbers of A and B?
甲数比乙数少2.5，乙数是甲数的6倍，甲乙两数的和是多少．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">2.5 / 5</gadget>
<output>0.5</output>

<gadget id="calculator">2.5 + 0.5</gadget>
<output>3</output>

<gadget id="calculator">0.5 + 3</gadget>
<output>3.5</output>

<result>3.5</result>