There are four numbers A, B, C, and D. It is known that the average of the three numbers A, B, and C is 26, and D is 22. What is the average of the four numbers?
有甲、乙、丙、丁四个数，已知甲、乙、丙三个数的平均数是26，丁是22，四个数的平均数是多少
<gadget id="calculator">26 * 3</gadget>
<output>78</output>

<gadget id="calculator">78 + 22</gadget>
<output>100</output>

<gadget id="calculator">100 / 4</gadget>
<output>25</output>

<result>25</result>