How much more is 50 meters than 40 meters? What is the column
50米比40米多百分之几？列式是多少
<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>