The average of 6 numbers is 53, two of them are the same, change one to 30, one to 70, and the average to 58, find the original number of those two numbers.
6个数的平均数是53，有两个一样，把一个改成30，一个改成70，平均数变为58，求那两个数原来为多少．
<gadget id="calculator">58 - 53</gadget>
<output>5</output>

<gadget id="calculator">5 * 6</gadget>
<output>30</output>

<gadget id="calculator">70 - 30</gadget>
<output>40</output>

<gadget id="calculator">30 + 40</gadget>
<output>70</output>

<gadget id="calculator">70 / 2</gadget>
<output>35</output>

<result>35</result>