There are several pomegranates on a pomegranate tree. If you subtract 7 from the number of pomegranates, multiply by 7, add 7, and divide by 7, the result is 7. Please count how many pomegranates there are on the pomegranate tree ?
一棵石榴树上结着若干个石榴，若把石榴的个数减去7，乘以7，加上7，除以7，结果等于7，请你算一算石榴树上一共有多少个石榴？
<gadget id="calculator">7 * 7</gadget>
<output>49</output>

<gadget id="calculator">49 - 7</gadget>
<output>42</output>

<gadget id="calculator">42 / 7</gadget>
<output>6</output>

<gadget id="calculator">6 + 7</gadget>
<output>13</output>

<result>13</result>