If adding 14 to a number, the number obtained is three times the original number, what is the original number?
一个数加上14，得到的数是原来的3倍，原来的数是多少．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">14 / 2</gadget>
<output>7</output>

<result>7</result>