It is known that the average of 5 numbers is 69, and one of the numbers is changed to 14, so that the average of 5 numbers is 67, what is the changed number?
已知5个数的平均数是69，把其中一个数改成14，这样5个数的平均数是67，这个被改动的数原来是多少？
<gadget id="calculator">69 * 5</gadget>
<output>345</output>

<gadget id="calculator">67 * 5</gadget>
<output>335</output>

<gadget id="calculator">345 - 335</gadget>
<output>10</output>

<gadget id="calculator">14 + 10</gadget>
<output>24</output>

<result>24</result>