Xiao Ming started to learn swimming from July 25th and ended on August 3rd. How many days did he learn to swim together?
小明从7月25日开始学游泳，8月3日结束，他共学游泳多少天？
<gadget id="calculator">31 - 25</gadget>
<output>6</output>

<gadget id="calculator">6 + 1 + 3</gadget>
<output>10</output>

<result>10</result>