Both Xiao Ming and Xiao Gang have some cards, and the number of Xiao Ming's cards is Xiao Gang's (4/5). If Xiao Gang gave Xiao Ming 14 cards, then Xiao Gang's number of cards is Xiao Ming's (2/3). It turns out that Xiao Gang has more cards than Xiao Ming.
小明和小刚都有一些卡片，小明的张数是小刚的(4/5)．如果小刚送给小明14张，这时小刚的张数是小明的(2/3)．原来小刚比小明多多少张．
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4 + 5</gadget>
<output>9</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(3/5) - (4/9)</gadget>
<output>7/45 = around 0.155556</output>

<gadget id="calculator">14 / (7/45)</gadget>
<output>90</output>

<gadget id="calculator">90 * (4/9)</gadget>
<output>40</output>

<gadget id="calculator">90 - 40 - 40</gadget>
<output>10</output>

<result>10</result>