It is a factor of 42 and a multiple of 7. It is also a multiple of 2 and 3. What is this number?
它是42的因数，又是7的倍数．它还是2和3的倍数．这个数是多少．
<gadget id="calculator">2 * 3 * 7</gadget>
<output>42</output>

<result>42</result>