Xiaoming has 5 boxes of toffee and Xiaoqiang has 4 boxes of fruit candies, which are worth 44 yuan in total. If Xiaoming and Xiaoqiang exchange a box, the value of the candy in each person’s hands is equal. How much is a box of toffee cheaper than a box of fruit candies? ?
小明有5盒奶糖，小强有4盒水果糖，共值44元，如果小明和小强对换一盒，则各人手里的糖的价值相等，一盒奶糖比一盒水果糖便宜多少元？
<gadget id="calculator">44 / 2</gadget>
<output>22</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">22 - 16</gadget>
<output>6</output>

<gadget id="calculator">6 - 4</gadget>
<output>2</output>

<result>2</result>