A number is between 10 and 38. The difference between it and 10 is three times the difference between it and 38. What is the number?
一个数在10与38之间，它与10的差是与38的差的3倍，这个数是多少．
<gadget id="calculator">38 * 3</gadget>
<output>114</output>

<gadget id="calculator">10 + 114</gadget>
<output>124</output>

<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">124 / 4</gadget>
<output>31</output>

<result>31</result>