(1988+1986+1984+…+6+4+2)-(1+3+5+…+1983+1985+1987)
(1988+1986+1984+…+6+4+2)-(1+3+5+…+1983+1985+1987)
<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">1_988 / 2</gadget>
<output>994</output>

<gadget id="calculator">1 * 994</gadget>
<output>994</output>

<result>994</result>