If the sum of the three numbers A, B, and C is 25, the average of the three numbers C, D, and E is 25, and the average of the five numbers A, B, C, D, and E is 16, what is C? ．
若A、B、C三个数的和是25，C、D、E三个数的平均数是25，A、B、C、D、E五个数的平均数是16，则C是多少．
<gadget id="calculator">25 * 3</gadget>
<output>75</output>

<gadget id="calculator">16 * 5</gadget>
<output>80</output>

<gadget id="calculator">75 - 80</gadget>
<output>-5</output>

<gadget id="calculator">75 + (-5)</gadget>
<output>70</output>

<result>70</result>