Calculation: 1990+1991+1992+1993+...2003=how much.
计算：1990+1991+1992+1993+…2003=多少．
<gadget id="calculator">1 + 9</gadget>
<output>10</output>

<gadget id="calculator">9 / 2</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">10 * (9/2)</gadget>
<output>45</output>

<gadget id="calculator">10_000 + 9_000 + 900 + 45 + 8_000 + 6</gadget>
<output>27_951</output>

<result>27_951</result>