The average of 5 numbers is 30. If one of the numbers is changed to 14, the average of the 5 numbers is 26. What is the changed number?
有5个数的平均数是30，如果把其中一个数改为14，这时5个数的平均数是26，改动的数原来是多少？
<gadget id="calculator">30 * 5</gadget>
<output>150</output>

<gadget id="calculator">26 * 5</gadget>
<output>130</output>

<gadget id="calculator">150 - 130</gadget>
<output>20</output>

<gadget id="calculator">14 + 20</gadget>
<output>34</output>

<result>34</result>