The numbers 2, 4, 6, 8, and 10 are all even numbers. What is the sum of all even numbers smaller than 111?
2、4、6、8、10这些数都是双数，比111小的所有双数的和是多少．
<gadget id="calculator">2 + 110</gadget>
<output>112</output>

<gadget id="calculator">110 / 2</gadget>
<output>55</output>

<gadget id="calculator">55 / 2</gadget>
<output>55/2 = around 27.5</output>

<gadget id="calculator">112 * (55/2)</gadget>
<output>3_080</output>

<result>3_080</result>