The number of A is 12, and the number of B is greater than that of A (1/4), what is the number of B?
甲数是12，乙数比甲数大(1/4)，那乙数是多少．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">12 * (5/4)</gadget>
<output>15</output>

<result>15</result>