A's number is 25, B's number is 30, how much more than A's number
甲数是25，乙数是30，乙数比甲数多多少
<gadget id="calculator">30 - 25</gadget>
<output>5</output>

<gadget id="calculator">5 / 25</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>