The number of A is 40, the number of B is 50, how much more is the number of B than the number of A
甲数是40，乙数是50，乙数比甲数多多少
<gadget id="calculator">50 - 40</gadget>
<output>10</output>

<gadget id="calculator">10 / 40</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>