3 meters increase its amount (fill in a fraction) and then it is 5 meters.
3米增加它的多少(填几分之几)后是5米．
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>