If a number is divided by 2, 3, or 7, the result will be 1. What is the smallest number?
一个数被2，3，7除结果都余1，这个数最小是多少．
<gadget id="calculator">2 * 3 * 7</gadget>
<output>42</output>

<gadget id="calculator">42 + 1</gadget>
<output>43</output>

<result>43</result>