The number of A is more than that of B (2/5), and the number of B is (15/8), what is the number of A?
甲数比乙多(2/5)，乙数是(15/8)，甲数是多少？
<gadget id="calculator">15 / 8</gadget>
<output>15/8 = around 1.875</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">(15/8) * (7/5)</gadget>
<output>21/8 = around 2.625</output>

<result>21/8 = around 2.625</result>