Honghong and Yaya went to the bookstore and each wanted to buy the same dictionary. Honghong brought 40 yuan and Yaya brought 68 yuan. They pooled the money together and bought a dictionary each. When they got home How much does Honghong want to pay back to Yaya?
红红和丫丫去书店每人要买一本同样的词典，红红带了40元钱，丫丫带了68元钱，他们俩把钱凑在一块正好每人买了一本，回家后红红要还丫丫多少元钱．
<gadget id="calculator">40 + 68</gadget>
<output>108</output>

<gadget id="calculator">108 / 2</gadget>
<output>54</output>

<gadget id="calculator">68 - 54</gadget>
<output>14</output>

<result>14</result>